Description of Sea to Summit eVAC Dry Sack The new eVAC™ Dry Sack is a slimmed down version of our award winning eVENT® Compression Dry Sack. We use waterproof, air permeable eVENT® fabric on the base for valve-free air expelling, allowing compact packing. Instead of straps for compression, you just roll the sack down and air is pushed out of the base. Then close the buckle and you’ve just saved space and weight. The sack is oval-shaped, rather than round so they resist rolling when laid on their side. Features: Air permeable, waterproof eVENT® fabric base Valve-free air expelling design for compact packing Space saving, low profile, streamlined shape Oval base resists rolling, stays where you put it Waterproof non-wicking Hypalon® roll top closure 10,000mm waterhead, lightweight durable nylon fabric All seams are double stitched and tape sealed Reinforced stitching on stress points White interior for better visibility of contents eVAC Dry Sack - 3 Liter 11” x 7” x 4” 1.5 oz 3 L / 183 cu in eVAC Dry Sack - 5 Liter 15” x 7” x 4” 1.7 oz 5 L / 305 cu in eVAC Dry Sack - 8 Liter 17” x 8” x 5” 2 oz 8 L / 488 cu in eVAC Dry Sack - 13 Liter 20” x 9” x 6” 2.4 oz 13 L / 793 cu in eVAC Dry Sack - 20 Liter 24” x 11” x 7” 3 oz 20 L / 1220 cu in eVAC Dry Sack - 35 Liter 28” x 13” x 8” 4 oz 35 L / 2136 cu in eVAC Dry Sack - 65 Liter 33” x 15” x 10” 5.2 oz 65 L / 3966 cu in