The Airstream Dry Sac is a durable, waterproof stuff-sac that lets air out and keeps contents dry. Product features eVent? fabric base allows air to expel so drysac can be compressed, fully taped sealed seams, roll top closure with side release buckles, nylon mainbody with light grey waterproof PU coated inner reduces darkness and aids viewing of contents. Available in 4 convenient sizes. Each sold seperately. Size: 18" Type: Backpacks Color: Beige Color Mapping: Beige Age: Adult Gender: Male