Sea to Summit Big River Dry Bag
Best rugged gear protection for serious water sports and bike packing.
This is the fortress you need when your gear absolutely cannot get wet. The heavy-duty nylon shell is virtually indestructible against rocks and rough handling, though that ruggedness adds a bit of weight compared to lighter, more delicate options. It’s the ultimate insurance policy for your most critical supplies.
$39.95
at
Backcountry
More Big River options
Who it's for
- Rugged adventurers needing gear that survives harsh outdoor conditions
- Paddlers and bikepackers requiring secure external mounting options
- Organized packers looking to maximize storage in narrow hulls
Who should skip it
- Ounce-counting backpackers prioritizing weight savings over extreme durability
- Winter explorers operating in sub-zero environments
- Water sports enthusiasts expecting frequent or deep underwater submersion
Performance breakdown
Waterproof integrity
Fully seam-sealed construction keeps gear bone-dry even during complete submersion.
Abrasion resistance
The 420-denier nylon shell shrugs off rocks and rough handling easily.
Attachment versatility
Strategic lash points make securing this bag to any rig effortless.
Compression capability
Roll-top design effectively squeezes out air to minimize your pack volume.
Weight-to-durability ratio
Robust materials provide heavy-duty protection without adding unnecessary bulk.
Ease of access
Roll-top closures are secure but require more effort than zippered alternatives.
Key Specs
Material
TPU membrane/laminate, 420D nylon face fabric
Capacity
5 Liters
Waterproof Rating
10,000mm
Weight
4.8 ounces
Fabric Thickness
420 Denier
Closure Type
Roll-top
Is Submersible
Yes
Seam Construction
Full seam sealing
Has External Pockets
No
Has Transparent Window
No
Know before you buy
Still have a question?
Ask Metto anything about the Sea to Summit Big River Dry Bag before you decide.
