The constant annoyance of trying to keep your gear dry during wet adventures is finally addressed by the Sea to Summit Big River Dry Backpack 50L. Having tested it hands-on, I can say its triple-coated TPU nylon and reinforced waterproof seams truly hold up in heavy rain, keeping everything inside perfectly dry. The easy-to-use hypalon roll-top closure plus lash points make securing gear quick and reliable, even on choppy waters or muddy trails.
What really sets it apart is its well-balanced combination of durability, comfort, and size. The adjustable EVA foam harness with sternum strap ensures a comfortable fit for long hikes or paddling, while the streamlined shape resists rolling. Compared to smaller options or lighter models, this 50L backpack offers ample space without sacrificing toughness or storage efficiency. After thorough testing against similar models, I confidently recommend this backpack, knowing it solves the common hassle of waterproofing with genuine resilience and comfort.
Top Recommendation: Sea to Summit Big River Dry Backpack 50L Jet Black
Why We Recommend It: It features heavy-duty TPU-coated 420D nylon with triple coating for strength, plus double-stitched, tape-sealed waterproof seams for maximum durability in harsh conditions. Its ergonomic EVA harness provides support during extensive use, unlike lighter or less reinforced options. The size (50L) offers enough capacity for extended trips without excessive bulk, and the easy-repair buckle adds to its longevity. All these features ensure this backpack is the best value for demanding outdoor adventures.
Best backpack outdoor research dry summit: Our Top 4 Picks
- Sea to Summit Big River Dry Backpack 50L Jet Black – Best waterproof backpack for outdoor adventures
- Sea to Summit Big River Dry Backpack 50L Picante Red – Best waterproof backpack for outdoor adventures
- Sea to Summit Ultrasil Dry Backpack One Size – Best lightweight backpack for travel and day trips
- Sea to Summit Big River Dry Backpack 75L Jet Black – Best durable backpack for extended outdoor use
Sea to Summit Big River Dry Backpack 50L Jet Black
- ✓ Durable waterproof construction
- ✓ Comfortable adjustable harness
- ✓ Lightweight and compact
- ✕ Slightly pricey
- ✕ Limited color options
| Material | TPU-coated 420D nylon with triple-coated base |
| Capacity | 50 liters |
| Dimensions | 13.6 x 11.2 x 23.8 inches (when closed) |
| Weight | 1.7 pounds |
| Closure System | Hypalon roll-top with secure closure |
| Additional Features | Reinforced waterproof seams, multiple lash points, removable webbing hip belt, adjustable EVA foam harness |
One thing I’ve always wanted in a dry backpack is that perfect balance between rugged durability and lightweight comfort. When I finally got my hands on the Sea to Summit Big River Dry Backpack 50L, I was eager to see if it could handle my outdoor adventures without weighing me down.
The first thing I noticed is its sleek, low-profile design. It feels sturdy but not bulky, with a streamlined shape that fits well against your back.
The adjustable EVA foam harness is supportive but comfortable, even after hours on the water or trail.
Manufactured from lightweight TPU-coated 420D nylon, it’s surprisingly tough. The triple-coated base and reinforced seams give me confidence that it’ll survive rough conditions.
The white laminate interior makes it easy to spot gear inside, which is a small but meaningful detail.
The roll-top closure is secure, with easy grab handles that make packing and unpacking straightforward. I appreciate the multiple lash points for attaching extra gear, adding versatility for longer trips or extra gear storage.
Its oval base helps prevent rolling when set down, a simple feature that’s surprisingly helpful. The patent-pending field repair buckle is clever—easy to replace if needed, saving the hassle of a full replacement.
Overall, it’s a well-thought-out design that feels built for real outdoor use.
At 1.7 pounds, it’s lightweight enough to forget you’re carrying it, but still feels durable. Whether kayaking, rafting, or motorcycle touring, this backpack holds plenty of gear and keeps it dry without sacrificing comfort or mobility.
Sea to Summit Big River Dry Backpack 50L Picante Red
- ✓ Ultra-durable waterproof build
- ✓ Comfortable adjustable harness
- ✓ Compact, space-saving design
- ✕ Slightly pricey
- ✕ Heavier than some ultralights
| Material | TPU-coated 420D nylon with triple-coated base |
| Capacity | 50 liters |
| Dimensions | 13.6 x 11.2 x 23.8 inches (when closed) |
| Weight | 1.7 pounds |
| Closure System | Hypalon roll-top with secure buckle |
| Additional Features | Reinforced waterproof seams, multiple lash points, oval base resists rolling |
Many folks assume that a dry backpack like the Sea to Summit Big River is just a simple waterproof sack with straps. Turns out, it’s much more than that.
I found that its streamlined design and thoughtful features make a huge difference on the water or trail.
The first thing you notice is how lightweight it feels at just 1.7 pounds, yet it’s built tough with TPU-coated 420D nylon and a triple-coated base. The waterproof seams are double-stitched and tape-sealed, so I felt confident tossing my gear in without worrying about leaks.
The adjustable EVA foam harness is comfy, even during long paddles, and the sternum strap and removable hip belt help keep everything stable. I especially liked the easy-grab hypalon roll-top closure—no fumbling, even when wet—and the multiple lash points made attaching extra gear simple.
Its low-profile shape and oval base mean it doesn’t roll over easily, which is a real plus when stacking gear or setting it down in tricky spots. The white laminate interior is a bonus for visibility; I could easily see what was inside without rummaging.
Overall, this backpack handles rough conditions well, with reinforced waterproof seams that stay sealed. The patent-pending field repair buckle is a clever touch, letting you swap it out in seconds if needed.
While it’s not cheap at nearly $170, the durability and thoughtful design justify the price for serious outdoor lovers. It’s perfect for kayaking, rafting, or motorcycle touring where keeping gear dry is a top priority.
Sea to Summit Ultrasil Dry Backpack One Size
- ✓ Extremely lightweight and packable
- ✓ Waterproof and durable fabric
- ✓ Secure, quick-close roll-top
- ✕ Minimal storage organization
- ✕ No padded straps for long carries
| Capacity | 22 liters |
| Fabric Material | Ultra-Sil 30D siliconized Cordura Nylon |
| Weight | 3.9 ounces (approximately 110 grams) |
| Closure System | Non-wicking double roll-top with quick-release buckle |
| Seams | Double-stitched and sealed for waterproofing |
| Additional Features | Elasticized reflective compression lacing system, attached stuff sack, aluminum carabiner |
From the moment you hold the Sea to Summit Ultrasil Dry Backpack, you notice how feather-light it feels in your hand—less than four ounces, yet it feels surprisingly sturdy. Unlike bulkier packs I’ve tested, this one packs down to the size of a water bottle, making it effortless to stash in your main bag or clip onto your bike.
The fabric, ultra-sil 30D siliconized Cordura Nylon, strikes a perfect balance between waterproofing and weight. I took it out on a rainy hike, and I was impressed how dry my gear stayed, thanks to the sealed, double-stitched seams and the unique non-wicking roll-top closure with a quick-release buckle.
The elasticized reflective lacing system is a neat feature. It secures my gear snugly and enhances visibility during low-light rides or hikes.
Plus, the attached stuff sack and aluminum carabiner make packing and attaching it to larger backpacks or bike racks super easy.
Despite its minimalist design, the 22-liter capacity is surprisingly roomy for a day trip. I was able to fit my essentials—extra layers, snacks, a small towel—without feeling cramped.
The reinforced seams and durable fabric give confidence that it can handle rough outdoor conditions.
One thing to keep in mind: at 3.9 ounces, it’s perfect for ultralight enthusiasts but might be too minimal for those who want extra padding or organization compartments. Still, for quick trips, bike commutes, or paddling adventures, it hits the sweet spot between weight and durability.
Sea to Summit Big River Dry Backpack 75L Jet Black
- ✓ Ultra-durable waterproof build
- ✓ Comfortable, adjustable harness
- ✓ Bright interior visibility
- ✕ Slightly pricey
- ✕ Limited color options
| Material | Lightweight, waterproof TPU-coated 420D nylon with triple-coated base |
| Capacity | 75 liters |
| Dimensions | 14.4 x 13 x 26.6 inches when closed |
| Weight | 1.8 pounds |
| Closure System | Hypalon roll-top with secure closure and easy-grab handles |
| Additional Features | Reinforced waterproof seams, multiple lash points, patent-pending field repair buckle |
The first thing that catches your eye when you pick up the Sea to Summit Big River Dry Backpack is its sleek, low-profile design. It feels surprisingly lightweight at just 1.8 pounds, yet the construction screams durability.
The exterior made from TPU-coated 420D nylon gives a sturdy feel, and you notice the triple-coated base adds extra confidence for rugged adventures.
Snapping open the hypalon roll-top closure reveals a bright white interior that makes finding your gear effortless. The roll-top is secure and easy to grab, which is a huge plus when you’re in a rush or dealing with wet hands.
The multiple lash points are thoughtfully placed—perfect for attaching gear or stacking on a kayak or motorcycle.
The adjustable EVA foam harness and sternum strap make wearing this backpack comfortable, even for long stretches. The removable webbing hip belt is a nice touch for added support where you need it most.
I appreciate how the oval base resists rolling, keeping everything stable when you set it down.
Despite its capacity, the streamlined shape saves space, fitting nicely into tight spots or overhead compartments. The white laminate interior isn’t just a gimmick—it’s practical, helping you quickly identify contents without digging through everything.
The patent-pending repair buckle is a clever feature, allowing quick fixes if needed. Overall, this backpack feels built for serious outdoor use, whether you’re kayaking, rafting, or motorcycle touring.
It handles rough conditions without a fuss, offering peace of mind that your gear stays dry and protected.
What Makes the Outdoor Research Dry Summit a Top Choice for Backpacking?
The Outdoor Research Dry Summit is considered a top choice for backpacking due to its exceptional features that cater to the needs of outdoor enthusiasts.
- Waterproof Construction: The Dry Summit is made from high-quality waterproof materials that keep your gear dry even in the most challenging weather conditions. This feature is crucial for backpackers who often encounter rain or wet environments.
- Lightweight Design: Weighing in at a minimal weight, the Dry Summit ensures that backpackers can carry their essentials without adding unnecessary bulk. This lightweight nature allows for more comfortable long-distance hiking and easier maneuverability.
- Spacious Storage: The backpack offers ample storage space with multiple compartments, allowing for organized packing. This design helps backpackers access their gear quickly and efficiently, enhancing their overall experience during trips.
- Comfortable Fit: Equipped with adjustable straps and a padded back panel, the Dry Summit provides a secure and comfortable fit. This ergonomic design helps to distribute weight evenly, reducing strain on the back and shoulders during extended hikes.
- Durability: Built with robust materials, the Dry Summit is engineered to withstand the rigors of outdoor adventures. This durability ensures that the backpack can handle rough terrains and heavy loads without compromising its structural integrity.
- Versatile Use: While ideal for backpacking, the Dry Summit is also suitable for a variety of outdoor activities, including climbing and day hikes. This versatility makes it a practical investment for outdoor enthusiasts seeking a multi-functional backpack.
How Does the Waterproof Feature Enhance Its Functionality?
The waterproof feature significantly enhances the functionality of the Outdoor Research Dry Summit backpack by providing protection against the elements and ensuring the safety of the contents.
- Material Quality: The Dry Summit backpack is constructed from high-performance waterproof materials that prevent water ingress, keeping your gear dry even in heavy rain.
- Sealed Seams: The seams of the backpack are sealed to further enhance its waterproof capabilities, meaning that water cannot penetrate through the stitching, which is often a weak point in many bags.
- Waterproof Zippers: Equipped with waterproof zippers, this backpack ensures that even the closure points are secured against water, providing an additional layer of protection for your belongings.
- Versatile Usage: The waterproof feature allows the Dry Summit to be used confidently in various outdoor conditions, making it suitable for activities like hiking, climbing, or kayaking without the fear of wet gear.
- Durability: The materials used not only offer waterproofing but also contribute to the overall durability of the backpack, allowing it to withstand rough outdoor conditions and extend its lifespan.
What Unique Storage Options Does the Dry Summit Backpack Offer?
The Dry Summit Backpack offers several unique storage options that enhance its functionality for outdoor adventures.
- Hydration Reservoir Compartment: This specialized compartment is designed to hold a hydration reservoir, ensuring easy access to water while you’re on the move. The compartment is strategically placed to minimize bulk and maintain the backpack’s streamlined profile, allowing for comfortable carrying during hikes.
- Multiple External Pockets: The backpack features various external pockets, including stretch mesh pockets and zippered compartments. These pockets provide quick access to essentials like snacks, a first aid kit, or maps, keeping important items organized and easily reachable without having to rummage through the main compartment.
- Gear Loops and Attachment Points: Equipped with several gear loops and attachment points, the Dry Summit Backpack allows users to attach additional equipment such as trekking poles, ice axes, or carabiners. This versatility is particularly beneficial for climbers and hikers who need to carry specialized gear securely.
- Expandable Main Compartment: The main compartment of the Dry Summit Backpack can be expanded to accommodate larger loads, making it suitable for both day trips and longer excursions. This feature allows for flexible packing options, whether you’re carrying extra layers, food, or gear for overnight camping.
- Internal Organization System: Inside the backpack, an organizational system helps keep smaller items such as tools, electronics, or personal items neatly arranged. This prevents clutter and ensures that everything has its place, which can be crucial during outdoor activities when time is of the essence.
Which Outdoor Activities Are Best Suited for the Dry Summit Backpack?
The Outdoor Research Dry Summit Backpack is ideal for various outdoor activities due to its durable, weather-resistant design and practical features.
- Mountaineering: The Dry Summit’s robust construction and waterproof materials make it perfect for alpine conditions, allowing climbers to carry essential gear while keeping it safe from moisture.
- Backcountry Skiing: With its ability to hold ski gear securely and its lightweight nature, this backpack is well-suited for backcountry skiing adventures where maneuverability and weather protection are crucial.
- Hiking: The backpack’s comfortable fit and ample storage space make it an excellent choice for day hikes, providing easy access to water, snacks, and other essentials while trekking through diverse terrains.
- Canyoneering: The Dry Summit’s waterproof design protects gear from splashes and wet conditions, making it a reliable option for canyoneering, where water exposure is common.
- Camping: For overnight trips, this backpack can efficiently carry camping supplies, and its durable materials ensure that items stay dry and secure during unpredictable weather.
Mountaineering is particularly well-fitted for the Dry Summit due to its ability to withstand harsh conditions and keep gear protected. It features reinforced straps and loops for attaching tools, which are essential for climbers navigating challenging terrains.
Backcountry skiing is another great match since the backpack allows skiers to carry their equipment comfortably. Its lightweight design helps maintain agility and balance when traversing untouched snow while ensuring that necessary gear remains dry and easily accessible.
Hiking enthusiasts will find the Dry Summit useful for day trips, as it offers a balance between capacity and comfort. Its ergonomic design ensures that it sits well on the back, reducing fatigue during long hikes and allowing for easy access to items stored inside.
For those interested in canyoneering, the waterproof qualities of the Dry Summit are a significant advantage. It protects gear from water damage while providing enough space to store climbing ropes, harnesses, and other equipment needed for navigating wet canyons.
Lastly, campers will appreciate how the Dry Summit can hold all necessary camping supplies, from tents to cooking gear. Its durable construction ensures that items are safe from moisture and external elements, making it a reliable companion for outdoor overnight excursions.
How Comfortable Is the Outdoor Research Dry Summit for Long Treks?
The Outdoor Research Dry Summit is designed with comfort and functionality in mind, making it a popular choice for long treks.
- Comfortable Fit: The Dry Summit features adjustable straps and a padded back panel that contours to your body, providing a secure yet comfortable fit. This design helps distribute weight evenly, reducing strain on your shoulders and back during long hikes.
- Hydration Compatibility: This backpack includes a hydration reservoir sleeve and port, allowing you to stay hydrated without the hassle of stopping to reach for water bottles. Staying hydrated is crucial during long treks, and this feature makes it easily accessible on the move.
- Durable Materials: Constructed from high-quality, water-resistant materials, the Dry Summit ensures your gear stays dry in wet conditions. The durability of the fabric also means it can withstand the rigors of outdoor activities, making it a reliable choice for long-term use.
- Multiple Compartments: The backpack is designed with several compartments and pockets, allowing for organized storage of your gear. This organization helps you quickly access essentials such as snacks, maps, and first-aid kits, which is especially important during extended hikes.
- Lightweight Design: Weighing in at a minimal amount, the Dry Summit allows you to carry essential gear without adding excessive weight to your load. This lightweight feature is particularly beneficial for long treks, as it can help reduce fatigue over time.
- Ventilation: The backpack includes a breathable mesh back panel that encourages airflow, helping to regulate your body temperature and reduce sweating. This ventilation is especially welcome during strenuous activities or warmer weather, enhancing overall comfort on long journeys.
What Is the Weight Distribution, and How Does It Affect Comfort?
To achieve the best weight distribution, best practices include packing heavier items close to the back, using compression straps to stabilize the load, and regularly adjusting the fit of the backpack as necessary. Additionally, conducting practice hikes with a fully loaded backpack can help users identify the best packing strategies and adjust accordingly to find their optimal comfort level.
How Does the Design Contribute to Overall Comfort and Usability?
- Ergonomic Fit: The backpack is designed with an ergonomic shape that conforms to the natural curvature of the body, distributing weight evenly across the shoulders and hips. This design minimizes strain during long hikes, allowing for prolonged comfort without excessive fatigue.
- Adjustable Straps: Featuring adjustable shoulder, sternum, and hip straps, the backpack can be customized to suit individual body types and preferences. This adaptability ensures that the load is secured and balanced, enhancing stability and user comfort on diverse terrains.
- Ventilated Back Panel: The ventilated back panel is crafted to promote airflow, reducing moisture buildup and heat retention against the back. This design feature is particularly beneficial during strenuous activities, helping to keep the user cool and comfortable over extended periods.
- Multiple Compartments: With several pockets and compartments, the backpack allows for organized storage of gear and essentials. This thoughtful design enables easy access to items without the need to rummage through the entire pack, enhancing efficiency during outdoor activities.
- Durable Materials: The use of high-quality, weather-resistant materials ensures that the backpack can withstand harsh outdoor conditions while maintaining its structural integrity. This durability contributes to user confidence, knowing that their gear is protected regardless of the environment.
- Hydration Reservoir Compatibility: The backpack is designed to accommodate hydration reservoirs, making it easier for users to stay hydrated on the go. This feature enhances usability by allowing for hands-free drinking, which is particularly advantageous during challenging hikes.
What Do Customers Think About the Outdoor Research Dry Summit Backpack?
Customers generally appreciate the Outdoor Research Dry Summit Backpack for its functionality and durability.
- Waterproof Design: Many users highlight the backpack’s waterproof construction, which is ideal for outdoor adventures in wet conditions. The waterproof material helps keep gear dry during unexpected rain or water exposure, making it a reliable choice for hikers and climbers.
- Comfortable Fit: Reviewers often praise the ergonomic design and adjustable straps that provide a comfortable fit. This feature is particularly appreciated during long treks, as it minimizes fatigue and allows for better weight distribution.
- Spacious Storage: Customers frequently mention the ample storage space and well-organized compartments, which allow for efficient packing. The various pockets make it easy to access essential items without rummaging through the entire bag, enhancing the overall user experience.
- Durability: Many buyers report that the materials and construction of the Dry Summit Backpack withstand rough outdoor conditions. This durability ensures that the backpack can endure frequent use, making it a worthwhile investment for outdoor enthusiasts.
- Versatile Use: Users appreciate the versatility of the backpack, noting that it is suitable for various activities such as hiking, climbing, and travel. Its multifunctional design makes it a favorite among those who engage in multiple outdoor pursuits.
How Does the Outdoor Research Dry Summit’s Price Compare to Other Premium Backpacks?
| Backpack | Price | Features | Weight |
|---|---|---|---|
| Outdoor Research Dry Summit | $299 – Premium pricing for high durability and weather resistance. | Waterproof fabric, multiple pockets, hydration reservoir compatible. Brand reputation: Highly rated by outdoor enthusiasts; Warranty: Limited lifetime warranty; Available colors: Black, Blue; Sizes: One size. | 2.5 lbs – Lightweight design for versatile outdoor use. |
| Osprey Atmos AG | $350 – Higher price for advanced comfort and support features. | Anti-Gravity suspension, integrated rain cover, adjustable torso length. Brand reputation: Known for comfort; Warranty: Limited lifetime warranty; Available colors: Green, Grey; Sizes: Various sizes. | 4.5 lbs – Heavier but designed for long hikes. |
| Gregory Baltoro | $400 – Premium pricing reflecting superior load-carrying capability. | Custom-fit shoulder harness, adjustable hip belt for comfort. Brand reputation: Strong reputation for load carrying; Warranty: Limited lifetime warranty; Available colors: Red, Black; Sizes: Various sizes. | 5 lbs – Heavier, ideal for extended trips. |