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  • Designed for backpacking, adventure travel and water sports, it's much lighter weight and more packable than traditional dry bags
  • Fully taped seams and a Hypalon roll-top closure provide reliable waterproof performance
  • Durable buckle with D-ring attachment point secures roll top and can be fastened to a pack or kayak
  • Polyurethane-coated nylon body is lightweight yet durable
  • Bright white inner laminate for easy visibility of contents


View all Sea to Summit Roll-Top Dry Bags

REI membership


Best Use Watersports, Backpacking
Gear Capacity (L) 8 liters
Gear Capacity (cu. in.) 488 cubic inches
Number of Exterior Pockets 0
Waterproof Yes
Dry Bag Shape Cylindrical
Material(s) 70-denier nylon
Dimensions 6.7 x 18 inches
Weight 2.1 ounces
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Besides price, what is the difference between the Sea to Summit Big River Dry Bag and the Sea to Summit Lightweight Dry Sack? Is one better rated for submersion over the other?

Asked by: JeffM
​The Lightweight dry sack is less weight than the big river dry bag and is made with 70-Denier Nylon making it ideal for backpacking. The Big River is made with 420 Denier Nylon coated with tough thermoplastic urethane making it more rugged but also adds to the weight and makes it ideal for paddling and watersports.
Answered by: REIservice
Date published: 2017-04-13

Is the 18 inch height talking about the entire length of the bag unrolled or the length when the top is sealed properly?

Asked by: potato
Yes, the length of the Lightweight Dry Sack is measured from the bottom of the sack to the top when it's unrolled.
Answered by: REIservice
Date published: 2017-01-27
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