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      Sea to Summit Ultra-Sil Dry Sack

      Still haven't found a backpacking stuff sack that is ultra-lightweight and waterproof? Look no further than the Sea to Summit Ultra-Sil dry sack.
      • $13.95 $32.95

      Item # 777725

      Product size and color

      Orders of $50 or more ship for free. Learn more

      Orders of $50 or more ship for free. Learn more

      • details
      • specs
      • reviews
      • q & a
      • Siliconized on the outside, tough Cordura® nylon is weatherproof, lightweight and durable for hiking and backpacking in wet conditions
      • Polyurethane coating on the inside permits the fabric to be seam taped; waterproof seams are double-stitched and factory-taped for added weather protection
      • Hypalon® watertight roll-top closure keeps contents secure and protected; fold the Hypalon strip down first and make at least 3 rolls before closing the buckle
      • Roll-top fabric sacks are not intended for complete submersion; sensitive electronic devices should be double-bagged or packed in a waterproof hard case for maximum protection
      • Ultra-Sil sacks are designed for use inside a backpack and are not suitable for boating
      • Comes in assorted colors only; sorry, specific color requests cannot be accommodated


      Sea to Summit Ultra-Sil Dry Sack

      Specification 2 LITER 4 LITER 8 LITER 13L
      Best use Backpacking, Hiking Backpacking, Hiking Backpacking, Hiking Backpacking, Hiking
      Gear capacity (L) 2 liter 4 liter 8 liter 13 liter
      Gear capacity (cu. in.) 122 cubic inches 244 cubic inches 488 cubic inches 793 cubic inches
      Closure Roll-top Roll-top Roll-top Roll-top
      Compression straps No No No No
      Waterproof Yes Yes Yes Yes
      Material(s) Silconized nylon Silconized nylon Silconized nylon Silconized nylon
      Dimensions 8x9 inches 9x15 inches 6.5x18 inches 8.5x21 inches
      Weight 0.8 ounces 0.9 ounces 1.1 ounces 1.4 ounces
      Specification 20L 35 L
      Best use Backpacking, Hiking Backpacking, Hiking
      Gear capacity (L) 20 liter 35 liter
      Gear capacity (cu. in.) 1220 cubic inches 2135 cubic inches
      Closure Roll-top Roll-top
      Compression straps No No
      Waterproof Yes Yes
      Material(s) Silconized nylon Silconized nylon
      Dimensions 10x24 inches 12 x 27 inches
      Weight 1.8 ounces 2.2 ounces

      Sea to Summit Ultra-Sil Dry Sack

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      Rated 2out of5
      by fromLoses more than weight by being thin. I picked up two of these bags on the recommendation of a store employee. He recommended them over other dry bags because of how lightweight and thin they were. I packed a change of clothes and a jacket in this bag and then put it in my backpack. Also inside my backpack was a Camelback filled with ice and water, inside its own insulated, multi-fabric layer pouch. The condensation from the ice went through the thick lining of the pouch where my Camelback bladder was and through the material of this bag, finally stopping at my jacket. The dry sack was pretty wet on the outside, damp on the inside, and my jacket was slightly damp. Luckily my change of clothes was also wrapped up inside that jacket but stayed dry. Perhaps it was my fault for not gauging how much ice condensation would penetrate within my backpack. I am grateful though that I had my guidebook in another dry sack in another pocket of my backpack. Next time, I'll go for a thicker, more durable dry sack for the pocket that will be adjacent to my water source. I would still recommend this product for use inside a backpack, just keep it away from your water source.
      Date published: 2012-06-23
      Rated 4out of5
      by fromSo far, so good We bought a few of these bags to use as bear bags. We got tired of waking up to soaked bags of food if it had rained overnight. I figured that their airtight nature would also add that much more protection to prevent our packs from picking up any food smells during the day. They've only been used on one trip so far but they did nicely, easily clipping into carabiners for hoisting.
      Date published: 2013-06-13
      Rated 4out of5
      by fromReliable dry sack Withstood heavy, blowing rain in Patagonia. Stored my sleeping pad in it (8L size) and strapped it on the outside of my pack. It didn't tear despite getting hung on branches, scraping rocks, etc. The only time that water got in was when I left it sitting in standing water for over an hour...even then, only some water got in.
      Date published: 2013-12-21
      Rated 4out of5
      by fromGreat Bag used this on a weekend sailing trip, to hold my phone an camera. worked great! easy to get things in and out, rolled up easy. When closed, makes loop that is perfect for carrying or slipping over your wrist. Can also clip around/to things to keep from getting lost. Was able to take my camera out on the deck, out on excursions on the dingy, etc without a worry about anything getting wet or lost. Love these bags.
      Date published: 2011-06-16
      Rated 4out of5
      by fromkept everything dry got this as a gift and couldn't be more happy with it. i use it to pack my electronics (cameras, car keys, solar charger..) and some fire starters while i go day hiking and camping. I hike whenever i can so sometimes i get caught in some rain and it has always kept my gear dry. i dropped it in a pool at the bottom of a waterfall and no water got in. I roll it 4+ times.
      Date published: 2012-03-23
      Rated 5out of5
      by fromYuppers!!! Although my wife says my strong hands seem to rip or break everything, this definitely passed the test. Not sure if it's on purpose, but I like the way the closure turns into a loop for hanging.
      Date published: 2013-11-25
      Rated 5out of5
      by fromDry and light I got 2 of these for my bike tour. After the downpours we went through, the stuff inside was completely dry.
      Date published: 2014-04-23
      Rated 5out of5
      by fromSmall Dry Sack I actuallypurchased this bag to use as a compression bag for my over sized memory foam travel pillow, the horseshoe type. It is a problem carrying all these extra things on a plane especially when they are bigger than your purse. Using the bag I can roll up the pillow and reduce the size then clip it to my suitcase. Great bag and works for what I needed it for and it is so lightweight. I can imagine using this style and size for many other applications as well.
      Date published: 2014-05-02

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