Organise and protect. Made from Siliconised ripstop nylon, Osprey\'s Ultralight range of drysacks are designed to keep your gear protected no matter how wet it gets. Equipped with a fully waterproof roll-top closure, coated fabric and taped seams Osprey\'s drysacks ensure that your gear stays dry in all conditions. Unlike other drysacks, they have a rectangular shape, which results in more efficient packing. When removed from your backpack, they\'re able to stand unaided. What are you waiting for - make sure your gear is organised and protected.