Expedition-grade protection in the Big River Dry Bag
What Our Gearhead® Experts Are Saying:
"I've used this bag on everything from multi-day raft trips to motorcycle tours. The 10K waterproof rating is legit—gear stays bone dry even when the bag gets completely submerged."
Gear protection becomes critical when rescue is measured in days rather than hours, so we trust the Sea to Summit Big River Dry Bag to safeguard essentials during serious expeditions. TPU laminate and seam-sealed construction create a fortress that laughs off submersion while abrasion-resistant nylon handles the inevitable abuse of extended wilderness travel.
Details
- Bombproof dry bag designed for extended expeditions and touring
- TPU-laminated construction with full seam sealing ensures waterproofing
- 420-denier nylon shell resists abrasion from rocks and rough handling
- Roll-top closure compresses contents while sealing out moisture
- Multiple lash points provide secure attachment options for any adventure
- 10K waterproof rating withstands complete submersion scenarios
- Perfect for paddling, motorcycle touring, and wilderness camping
- Essential protection for electronics, clothing, and critical gear
- Item #STSZ087
- Material
- [membrane/laminate] TPU, [face fabric] 420D nylon
- Volume
- [x-small] 5L, [small] 8L, [medium] 13L, [large] 20L, [xx-large] 65L
- Pockets
- none
- Compression
- yes
- Waterproof
- 10,000mm
- Closure
- roll-top
- Dimensions
- [x-small] 6.6 x 5.6 x 12.7 in, [small] 7.6 x 6.5 x 14.7 in, [medium] 8.7 x 7.9 x 17.3 in, [large] 10.4 x 9.6 x 18.9 in, [xx-large] 15.0 x 13.9 x 28.3 in
- Claimed Weight
- [x-small] 4.8oz, [small] 5.6oz, [medium] 6.7oz, [large] 8.8oz, [xx-large] 15.3oz
- Activity
- flatwater paddling, river paddling
- Manufacturer Warranty
- lifetime
Reviews
Q&A
What do you think about this product?
Overall Rating
5 based on 215 ratings
Review Summary
Customer Images
Here's what customers have to say
The dry bags are praised for their durability, waterproofing, and versatility. Customers report the bags are sturdy, reliable, and keep gear dry even in extreme conditions. Many appreciate the multiple lashing points for easy attachment to various gear. The bags are described as lightweight yet durable. While some have experienced minor longevity issues, the reviews are overwhelmingly positive, and the bags are recommended for a wide range of outdoor activities.
AI-generated from the text of customer reviews.
View
Selecting an option will reload the available reviews on the pageSeptember 22, 2025
Seriously quality dry bag
[This review was collected as part of a promotion.] Over nearly three decades of sea kayaking I have used a lot of dry bags�and these are certainly among the best. I particularly appreciate their shape: The flat sides keep them from rolling around and make them easier to pack. They also tend to fit my boat better.
Originally reviewed on Sea to Summit
September 2, 2025
Dry Bags for Scout Trip
[This review was collected as part of a promotion.] We recommended that each of our scouts purchased a large dry bag for their 10 day northern tier canoe trip this summer. The bags performed well and I would recommend them to other scouts. If you have a choice, get the Big River Dry Bag it is rugged enough to last for a long time.
Originally reviewed on Sea to Summit
September 2, 2025
Great dry bag
[This review was collected as part of a promotion.] Kept everything dry and great size. Used on our trip to Alaska but will continue to use on our boat.
Originally reviewed on Sea to Summit
August 26, 2025
Great Bag
[This review was collected as part of a promotion.] Durable, perfect size and the strap worked well, easy to clean afterwards
Originally reviewed on Sea to Summit
August 16, 2025
did the job!
[This review was collected as part of a promotion.] We needed a cover for an outdoor gangway hoist control. The dry bag is now keeping it dry and reducing exposure to salt in the air.
Originally reviewed on Sea to Summit
August 5, 2025
Sturdy, reliable bags
[This review was collected as part of a promotion.] Love them. I’ve used some incarnation of sea to summit dry bag for years, and they’ve always worked well. When rolled down securely, they’ve kept things dry even after being briefly submerged. Good for water, and anything else. I keep one packed with emergency supplies for the dog and me, and it lives in the roof box of the car. Keeps things dirt and moisture free. Have and would purchase again.
Originally reviewed on Sea to Summit
July 2, 2025
Great bag!
[This review was collected as part of a promotion.] Bought for my wife’s motorcycle. Keeps her gear dry and organized:-)
Originally reviewed on Sea to Summit
June 27, 2025
Big River Dry bags
[This review was collected as part of a promotion.] We love our Big River Dry bags. We have several bags and in different sizes. We have been using the 65L for years for storing gear on our car racks keeping them dry and clean. The river bags are very strong and durable and the lash points are perfect for tying them down. We recently bought the 20L bag along with a sling strap to carry our 10L water cell to some of our hike to camp sites. This did a great job to stabilize it as we cradle it in front of our body to help distribute the weight. Another great resource for us. Thank you Sea to Summit in making excellent products.
Originally reviewed on Sea to Summit
June 27, 2025
Travel with confidence
[This review was collected as part of a promotion.] I purchased the Big River dry bag and am very pleased with quality material. I especially like the reinforced side loops for securing the bag. Previously I purchased your good quality water proof dry bags that are slippery.
Originally reviewed on Sea to Summit
June 11, 2025
Excellent waterproof sac
[This review was collected as part of a promotion.] Excellent quality waterprooof bag …the ai assisted chatbox was amazing as it took my complicated ask and correctly determined that my pro gadget bag would fit in this product . . answer was absolutely correct …product shipped fast and efficiently
Originally reviewed on Sea to Summit
Do you have a question about this product?
Related Searches
Sea To Summit Big River Dry Bag reviewBest waterproof dry bags for paddlingDurable dry bags for motorcycle touring50-liter dry bag for outdoor adventuresTPU laminated dry bags for maximum waterproofingAbrasion-resistant dry bags for rugged useRoll-top closure dry bags for easy accessLightweight dry bags for flatwater paddlingTop-rated dry bags for river excursionsCompression dry bags for efficient packingLong-lasting dry bags with lifetime warrantyEssential gear for outdoor enthusiastsLearn more about Big River Dry Bag