Sea to Summit
Big River Dry Backpack 50L
Best reliable protection for water based adventures.
This robust backpack is engineered for adventure, offering superior protection for your gear in wet environments. Constructed from heavy-duty nylon with a triple-coated base, it ensures durability and water-shedding capabilities. The fully waterproof design, coupled with a secure roll-top closure and taped seams, keeps contents dry. An adjustable harness and removable hip belt provide a comfortable and stable fit for extended wear, making it ideal for water sports, camping, and hiking.
$169.99
More Big River Options
Owner Satisfaction
4.7
/ 5
Category Rank
168
/ 15434
#168 in Backpacks
Price vs Category Average
+56%
Above average
Capacity
50
/ L
Who it's for
- Adventurers needing absolute gear protection during kayaking, rafting, or wet expeditions.
- Outdoor enthusiasts carrying heavy loads over varied terrain or long distances.
- Users needing a rugged pack for demanding outdoor adventures and frequent use.
Who should skip it
- Travelers who prefer multiple external pockets for easy access to essentials.
- Ultralight backpackers prioritizing minimal weight for fast-and-light adventures.
- Hikers in hot climates desiring maximum back airflow during strenuous activity.
Performance breakdown
Waterproof Integrity
Roll-top closure and taped seams create an impenetrable barrier against moisture.
Abrasion Resistance
Heavy-duty 420D nylon fabric withstands rugged terrain and harsh outdoor conditions.
Carry Comfort
Adjustable harness provides decent support, though lacks the ventilation of hiking-specific packs.
Field Repairability
Patented buckles allow for quick, tool-free replacements while deep in the backcountry.
Weight Efficiency
Impressively lightweight construction maximizes gear capacity without adding unnecessary bulk.
Stability
Removable hip belt and sternum strap keep the load secure during movement.
Key Specs
Capacity
50L
Material
420D nylon fabric
Waterproof
Yes
Closure Type
Roll-top
Intended Use
Travel, Hiking, Camping
Weight
1 lb. 10 oz.
Dimensions
23.9 x 13.6 x 11.2 in
Sternum Strap
Yes
Know before you buy
Yes, the Big River Dry Backpack is designed to be fully waterproof. Its roll-top closure and taped seams ensure that your gear stays dry even if the pack is briefly submerged or exposed to heavy rain.
It is designed for stability rather than long-distance backpacking comfort. While the adjustable EVA foam harness and sternum strap help distribute weight, it lacks the ventilation and advanced suspension systems found in dedicated hiking packs.
Yes, the webbing hip belt is removable. This is a great feature if you want to streamline the pack for shorter trips or when you don't need the extra stability.
The triple-coated base provides extra abrasion resistance and water-shedding capabilities in the area of the pack that sees the most wear. It prevents moisture from seeping in when you set the bag down on wet ground or damp surfaces.
This pack features Sea to Summit's patented Field Repair Buckles. You can replace a broken buckle in seconds using only a screwdriver, so you won't be stranded without a secure closure.
A 50L capacity is generally sufficient for a weekend trip if you are packing efficiently. However, because it is a dry bag style, you need to leave enough room at the top to roll the closure down at least three times to ensure a proper seal.
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$170