Ultra-Sil Dry Bag
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Shop Similar ProductsWhy We Like The Sea To Summit Ultra-Sil Dry Bag
Lightweight and waterproof, the Sea to Summit Ultra-Sil Dry Bags are made to keep our gear dry and organized inside a backpack or travel duffel. The translucent fabric lets us see the contents easily while the roll-top closure compresses our belongings and protects them with a watertight seal. These bags are not submersible and not intended for paddling and watersports. However, their 2K waterproof rating and seam-sealed construction keep our clothes, sleeping bags, electronics, and other gear dry when we're out backpacking, bikepacking, or traveling.
Details
- Dry bags for backpacking and land-lover pursuits
- Best for water-tight storage inside a pack or duffle
- Roll-top closure is waterproof and adds compressibility
- 30D Cordura nylon is abrasion-resistant
- Not recommended for watersports
- Item #STSZ08F
- Material
- 30D Ultra-Sil (Cordura nylon)
- Volume
- 3L (183cu in), 5L (305cu in), 8L (488cu in), 13L (793cu in), 20L (1229cu in), 35L (2136in)
- Pockets
- none
- Compression
- yes
- Waterproof
- yes
- Closure
- roll-top
- Dimensions
- [3L] 5.5 x 8.1in, [5L] 6 x 11.7in, [8L] 7.1 x 14in, [13L] 8.1 x 17in, [20L] 9.4 x 18.7in, [35L] 11.3 x 22.8in
- Claimed Weight
- [3L] 1.1oz, [5L] 1.9 oz, [8L] 2.3 oz, [13L] 2.9 oz, [20L] 3.4 oz
- Activity
- backpacking, cycling, travel
- Manufacturer Warranty
- lifetime
Reviews
Q&A
What do you think about this product?
Overall Rating
4.5 based on 35 ratings
Review Summary
Customer Images
Here's what customers have to say
The dry bag is praised by most customers for being durable, lightweight, and effective at keeping contents dry. Reviewers highlight its versatility for various outdoor activities. The bag is described as well-made with reinforced stitching and heavy-duty zippers. However, some customers report issues with the waterproofing and durability over time, with a few experiencing rips and seal failures. Overall, the product receives mostly positive feedback, though there are some mixed opinions regarding its long-term performance.
AI-generated from the text of customer reviews.
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Selecting an option will reload the available reviews on the pageAugust 23, 2025
Excellent
[This review was collected as part of a promotion.] Durable bags which are essential to separate items and also protect from wet weather conditions Top quality
Originally reviewed on Sea to Summit
August 14, 2025
Awesome
[This review was collected as part of a promotion.] The bag is wonderful, well made. One of my screws on the clip was loose and fell out so watch out for that, but i love the bag. Perfect for the wonderland trail!!!!
Originally reviewed on Sea to Summit
July 23, 2025
So far so good!
[This review was collected as part of a promotion.] Purchased 3 sets of bags for backpacking trip with Scouting America. Planned ahead of time what items would go in each bag. Descriptions, measurements and size options were very nice! So far so good. Could offer a better review after they return.
Originally reviewed on Sea to Summit
May 11, 2025
Eliminates the need for a pack cover and keep your stuff organized
[This review was collected as part of a promotion.] These super ultralight dry bags solved a riddle for a two week trek that I was trying to keep light and fast. Instead of organizing into Ziploc or other bags and having to carry a pack cover in case of rain these beauties pull double duty and do both. The different colors help keep things organized and easy to find in my pack.
Originally reviewed on Sea to Summit
December 30, 2024
Thank you!
[This review was collected as part of a promotion.] Thanks for sending me a replacement bag after the bird attack accident! You let us keep the destroyed bag and my mom cut it apart and made a miniature version for an 18 in doll. :)
Originally reviewed on Sea to Summit
November 23, 2024
Fine but wish they made a long, narrow bag for sleeping pads.
[This review was collected as part of a promotion.] I had to buy the biggest bag for our sleeping pads to get the needed length but there is a lot of excess width. Why can't they make a long narrow bag for sleeping pads? Don't people use roll up pads anymore? I don't want to use the bladder kind cause they can fail too easily. Otherwise, the best lightweight dry bag I could find. I have them in smaller sizes for the sleeping bags and that's fine.
Originally reviewed on Sea to Summit
October 7, 2024
Durable and ultra light weight
[This review was collected as part of a promotion.] An excellent dry bag for hiking, as it's very durable and weighs almost nothing. I highly recommend it for hiking!
Originally reviewed on Sea to Summit
August 12, 2024
Great Dry Bags
[This review was collected as part of a promotion.] Packing for a Kilimanjaro trip and the bags are light weight, flexible, and perfect for packing!
Originally reviewed on Sea to Summit
August 4, 2024
Love my Dry Stuff Sacks
[This review was collected as part of a promotion.] Ultralite, well made, warranty offered, and reasonable prices. Love you guys!!
Originally reviewed on Sea to Summit
July 30, 2024
Easy to use and Compact
[This review was collected as part of a promotion.] Quick and compact for daily use. Works well and fits in your regular day bags.
Originally reviewed on Sea to Summit
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Sea to Summit Ultra-Sil Dry Bag reviewBest lightweight waterproof bags for backpackingDurable waterproof storage for outdoor adventuresRoll-top dry bags for travel and hikingTranslucent dry bags for easy content visibility30D Cordura nylon dry bags for abrasion resistanceCompact compression dry bags for minimal packingWaterproof storage solutions for camping gearVersatile dry bags for cycling and travelSea to Summit Ultra-Sil bag sizes and weightsLifetime warranty on Sea to Summit dry bagsTop-rated dry bags for land-lover pursuitsLearn more about Ultra-Sil Dry Bag