The Sea to Summit Ultra-Sil Dry Day Pack keeps gear dry with waterproof siliconized Cordura Nylon fabric and a unique, non-wicking double roll-top closure. Durable and strong, it features a 22-liter carry capacity and still weighs less than 4 ounces. Ultra-portable, it packs down to the size of a water bottle and includes an attached stuff sack with handy carabiner. Double-stitched, reinforced seams are sealed with high-density tape. Features ergonomic shoulder straps and reflective, elasticized compression cords for attaching external gear. Ideal for bike commuting, paddling, or day hikes in the rain forest. Weight 3.9-ounces.