The new Sea To Summit Ultra-Sil® Dry Sacks are more than 50% lighter than our super popular Dry Sacks. They're made of Siliconized Cordura®, which is one of the lightest and toughest waterproof nylon fabrics available. Now you don't have to choose between keeping your gear dry and keeping it light.

• 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

• 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.