Product Search
Product Search
Take 20% Off a Full Price Item
Join our FREE Inside Edge Program!Details
Closeout Item # STSGA202M

Sea to Summit Ultra-Sil Dry Sack

Purchase Ultra-Sil Dry Sack
Starting At: $15.96

You Save


End of Season Clearance!
Please select product options to add to your cart.
100% Satisfaction Guaranteed
Shop with Confidence.

The Enwild Difference

Real People
Real People
Connect and #HikeRunRoam with us!
Awesome Gear
Awesome Gear
Get the inside edge on the outdoors.
Amazing Service
Amazing Service
Because you deserve it.
An excellent balance of durability, weather-resistance, and weight, the award-winning Sea to Summit Ultra-Sil Dry Sack is a reliable, ultra-lightweight option for organizing and protecting backpacking gear.


An excellent balance of durability, weather-resistance, and weight, the award-winning Sea to Summit Ultra-Sil Dry Sack is a reliable, ultra-lightweight option for organizing and protecting backpacking gear.

The dry sack’s Ultra-Sil 30D siliconized Cordura nylon fabric is highly durable and is coated for high water-resistance. Fully-taped seams further ensure weather protection and reinforced stitching bolsters strength. A Hypalon roll-top closure provides wide-open access to the sack’s interior but battens down the hatches by using an internal stiffener to create a secure seal. Delrin buckles emit a positive “click” when connected to confirm that you’ve properly protected contents. Oval shaping at the bottom of the dry sack provides structure and makes packing easy.

The Sea to Summit Ultra-Sil Dry Sack is available in your choice of colors and 1L (4.3" x 9.4"), 2L (5.1" x 11.4"), 4L (5.9" x 13"), 8L (6.7" x 18"), 13L (8.6" x 21"), 20L (10" x 24"), and 35L (12" x 27") size options.

  • A Backpacker magazine Editors' Choice Award Winner!
  • Super compact and ultra lightweight
  • Made of Ultra-Sil nylon, a polyurethane coated siliconized Cordura for ultimate waterproofing and maximum durability
  • Non-wicking Hypalon roll top closure with stiffener at the top for a better seal
  • Soft and flexible with a slippery finish for easy packing
  • Translucent fabric allows good visibility of the contents
  • All seams are double stitched and tape sealed
  • Any roll-top dry sack must be closed properly to ensure water can't get in. Begin by folding the Hypalon strip down first and be sure to have at least three rolls before closing the buckle.
  • Avoid contact with sharp objects or subjecting the sack to high abrasion, as this could compromise the waterproof fabric.
  • Ultra-Sil Dry Sacks should only be used to store sensitive electronic devices when used in conjunction with another, heavier-duty dry bag - the double bag method. For maximum protection of electronics the use of a waterproof hard case with a mechanical seal should be considered.
  • This product is not intended for boating or marine use.
  • Intended for use inside a bag or backpack

Our Thoughts

14 Reviews

4.79 / 5


Earn Gear Points For Reviewing Products

Join our FREE Inside Edge program and receive 20% off a full-price item. Earn discount points for reviewing items you purchase and receive exclusive discounts.

What are points?
As a member you can share reviews of items you purchase and we'll reward you with discount points valued at 5% of the item's original purchase price. It's EASY and it's FREE.

Sign Up Today
Sort By

Brian B.


Nice lightweight drysack


Very lightweight with solid construction and good materials. The sil nylon in this bag seems a bit more durable than other types of silnylon.


Not sure about the durability of the buckle as I often break these. To be determined how well it handles wear.

Brandon T.


I like it


This thing is cool. It is light and compact.


I don't know how long this lightweight material will last.

Curtis G.


Take my review with a grain of salt


This has incredible packability. If you are looking for an ultralight dry bag to keep clothes or other good dry, this is likely a great choice.


Ok, so I will admit that I did not do any testing of the water resistance of this product. However, I was going to use this as part of a "double bagging" system for a DSLR camera and a few lenses and the thinness of the material made me hesitant enough to return it for one of the thicker Seas to Summit dry bags. I'm sure it works great, but I didn't want to risk expensive equipment with something that felt like it would not handle abrasion very well. Again, I did not use the product, so this is more of a "gut feeling", but it's my impression.

Mike B.


Use as a waterproof food bag.


I purchased the 13 Liter bag to hold all my food. It's waterproof, and the perfect size for holding 5 days of food with room to spare. I use a carabiner and a line to hang it out of reach of pesky critters at night.



Shannon F.


Lightweight and nice.


Thin material but feels durable.


None that I can think of.

Jeremy A.


Seems high quality and as described


Out of the box it seems airtight and waterproof, seems durable and very light. The 13L should be big enough for 5+ days of food.


None so far



Seem very thin.


This product is very lightweight, even the top and clip. The bags are all smaller than I'd thought. I wish Backcountry Edge would list not just the volume, but also the dimensions on their site. I don't know how durable they are going to be, and who cares if the fabric is lightweight if it rips or tears with use, because it won't remain waterproof if torn. I am not a rough person, but time will tell on this one.


Very thin

Craig L.


Just as advertised


Light weight. Holds a surprising amount of clothes. Haven't got to test out how water proof it really is but hope I don't have to.



Maria W.


Great choice.


Truly waterproof. Light. Durable. The way in which in rolls closed makes for easier hanging on a bear pole.





Good lightweight dry bag.


Lightweight. Different color options.



Jeff W.


great for misc items


using for backcountry hunting to keep misc items dry and organized







I needed a new storage sack for my down sleeping bag, and this is perfect.