Matador 18L Waterproof Packable Backpack How Many Backpacks Could a Backpack Pack. . . The 18L Waterproof Packable Backpack is your go-anywhere daypack that can be stowed away in seconds when you don't need it. Made with recycled, durable materials, it's perfect for day hikes, city outings, or light travel, rain or shine. The backpack folds into its own pocket, making it easy to stash in your luggage or clip to your main bag. Simple, comfortable, and ready when you are - this pack is built for spontaneous adventures. Features Packs into itself, great for backup, travel, or quick use Roll-top closure and sealed seams keeps gear protected and dry in the elements Side compression straps, secure your pack All day hydration, with dual stretch water bottle pockets Padded, breathable straps, for all-day wear SPECIFICATIONSIntended Use Travel, Day Trips, Hiking Capacity18 LMaterial Recycled ripstop nylon, PFAS-free Weight10 oz / 284 g Unpacked Dimensions18" x 10" x 7. 5"Packable Yes, into internal pocket Closure Type Zipper | Matador Equipment | Matador 18L Waterproof Packable Backpack | Nylon