TOMSHOO Waterproof Backpack 30L, Ultra Lightweight Foldable Backpack for Outdoor Travel Trekking Daypack Compact: Folds into zippered pocket to fit anywhere. Unfolds from pocket to a useful backpack. Ultra Lightweight: 30L large capacity while only weighing about 8.5oz. Durable: Water-resistant and tear-resistant nylon, bearing capacity up to 20kg. Comfortable: With soft and breathable mesh shoulder straps for optimal comfort. What You Get:1*TOMSHOO Backpack,12-month worry-free warranty and friendly customer service.