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Sea To Summit
Ultra-Sil 1-35L Dry Sack

4.670103092783505 out of 5 stars
97 Reviews

Out of Stock

Don't worry though, we have a lot more Dry Bags in stock than that.

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Ultra-Sil Dry Sack

The Sea To Summit Ultra-Sil Dry Sack is made with with siliconized Cordura to make it incredibly light, durable, and waterproof. Bring it along when you're backpacking or climbing, when you need to protect your gear from wet weather without taking on additional weight. Translucent for easy packing and identification, the Ultra-Sil Dry Sack features a slippery finish so it slides easily into your backpack.

Details

  • All seams are double-stictched and taped to prevent leakage
  • Non-wicking Hypalon roll-top closure includes sitffeners at the top for a better seal
  • Suitable to keep contents dry in wet situations, but submersion is not recommended
  • Item #STS0121
Material
Ultra-Sil (siliconized Cordura), PU coating
Volume
1L (61cu in), 2L (122cu in), 4L (244cu in), 8L (488cu in), 13L (793cu in), 20L (1220cu in), 35L (2136cu in)
Waterproof
yes, fully taped seams
Closure
Hypalon waterproof roll-top
Dimensions
(width x height) [1L] 6 x 9in, [2L] 8 x 12in, [4L] 9 x 15in, (diameter x height) [8L] 6.5 x 18in, [13L] 8.5 x 21in, [20L] 10 x 24in, [35L] 12 x 27in
Claimed Weight
[1L] 0.5oz, [2L] 0.7oz, [4L] 0.9oz, [8L] 1.1oz, [13L] 1.4oz, [20L] 1.7oz, [35L] 2.2oz
Manufacturer Warranty
lifetime

What do you think about this product?

Overall Rating

4.5 based on 97 ratings

Review Summary

1 Stars - 2 reviews
2 Stars - 3 reviews
3 Stars - 0 reviews
4 Stars - 15 reviews
5 Stars - 77 reviews

Customer Images

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5 out of 5 stars

February 13, 2025

Solution Deck Bag

[This review was collected as part of a promotion.] I like the quality and the size of the bag. Will fit on a smaller kayak.

Roger S.
Sea to Summit

Originally reviewed on Sea to Summit

4 out of 5 stars

January 17, 2025

Deck bag

[This review was collected as part of a promotion.] Exactly what I wanted as a gift to a friend. perfect size and shape. Would have been a 5 if it came in red!

Stephen H.
Sea to Summit

Originally reviewed on Sea to Summit

5 out of 5 stars

January 9, 2025

Better than I had hoped

[This review was collected as part of a promotion.] This is better and more creative than the online description. It has a semi-rigid insert to hold shape, the interior dry bag is attached with loop-&-hook (Velcro), and there are a couple of ways to secure it on the deck of your kayak. Because some powerboat drivers have not paid close attention, I do prefer bright colors when crossing a lakes. And, of course, bright colors are easier for bush pilots to spot. I do wish it came in a bright color similar to a safety vest.

James C.
Sea to Summit

Originally reviewed on Sea to Summit

5 out of 5 stars

December 14, 2024

Great lightweight sacks

[This review was collected as part of a promotion.] A nice selection of lightweight dry sacks. Not fully waterproof but great for inside my backpack.

Dominic L.
Sea to Summit

Originally reviewed on Sea to Summit

5 out of 5 stars

November 28, 2024

Great bag!

[This review was collected as part of a promotion.] I use this as a pack liner and so far it has kept things super dry, with a better lock system than a trash bag. Also has worked as a bear bag.

Nicolas P.
Sea to Summit

Originally reviewed on Sea to Summit

5 out of 5 stars

April 19, 2024

Amazing pack!

Very happy with this lightweight pack. It suits my backpacking style with all the features.

Treese
5 out of 5 stars

June 8, 2023

Great waterproof bags!

[This review was collected as part of a promotion.] I bought these for my husband, as he was envious of the ones I had. Have used them to pack for rafting trips in Alaska and they keep everything organized and dry. Love the fact that these bags are not bulky and their nylon fabric makes stuffing them into larger river bags a breeze.

carol m.
Sea to Summit

Originally reviewed on Sea to Summit

5 out of 5 stars

March 28, 2023

Lightweight, helps organize and keeps

[This review was collected as part of a promotion.] Lightweight, helps organize and keeps my clothes dry in my pack.

Leo B.
Sea to Summit

Originally reviewed on Sea to Summit

5 out of 5 stars

March 23, 2023

Just what I was looking for

[This review was collected as part of a promotion.] These are perfect for organizing my pack and keeping everything dry!

Monique H.
Sea to Summit

Originally reviewed on Sea to Summit

5 out of 5 stars

February 26, 2023

Just The bags I needed.

[This review was collected as part of a promotion.] Just The bags I needed. I warm planning on using the 35L bags for my zero degree down quilts as emergency bag in my truck along with gloves matches beanie, ect.I bought some smaller bags with emergency gear in mind.I will setup with At least 2 bags for emergencies,. I figure a larger bag is easier to find In an emergency and the orange bags I have purchased are for the reasons and they are waterproof. Thanks Sea to Summit

Diane C.
Sea to Summit

Originally reviewed on Sea to Summit