The Sea to Summit Ultra-Sil Dry Sacks are made of Siliconized Cordura, which is one of the lightest and toughest waterproof nylon fabrics available. can keep your gear dry, while still keeping a light load on yoour back.
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 Nearly transparent allowing good visibility of the contents All seams are double stitched and tape sealed Smaller sizes have flat bottoms, others are round Colors: kiwi green, sky blue and orange
Proper Use: Any roll-top dry sack must be closed properly to ensure water cant 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. 4 Liter Dimensions: 9 in flat x 15 in 4 Liter Weight: .9 oz