Granite Gear Round Rock Solid Compression Sack Assorted Colors 31L. They designed these stuff sacks to easily compress lofty items such as sleeping bags and clothing to a nearly rock solid state. The unique design evenly distributes the stress of compression and prevents bulging. The original often copied but never equalled. Accept no imitations Colors: Assorted Specifications for Granite Gear Round Rock Solid Compression Sack: Manufacturer: Granite Gear Color: Assorted Condition: New Weight: 1 lb Application: Backpacking Hiking Features of Granite Gear Round Rock Solid Compression Sack: Round Rock Compression Sack Sizing Size Weight Dimensions Volume XS 3.8oz . 108grams 6.5x15" . 17x38cm 475ci . 7.8L S 4.8oz . 136grams 7.5x17" . 19x43cm 675ci . 11L M 5.1oz . 144grams 8.5 x 19" . 22x48cm 975ci . 16L L 6.1oz . 173grams 10x20.5" . 25x52cm 1400ci . 23L XL 6.9oz . 196grams 11x22" . 28x56cm 1900ci . 30L XXL 8.5oz . 241grams 13x24" . 33x61cm 2700ci . 45L XXXL 9.5oz . 269grams 14x26" . 36x66cm 3500ci . 57L Package Contents: Granite Gear Round Rock Solid Compression Sack Granite Gear 20404-PC: Round Rock Solid Compression Sack Assorted Colors 31L