Ispeed Foldable Lightweight Waterproof Travel Backpack Daypack Bag Sports&hiking, 30L Compact, Lightweight, Fold-able Bag, Ideal for daily/sporty/Multi-purpose Use. 4 Colors to choose from. Best gift for friend! Size: 42x 16x 30.5CM/After folding: 14 x 23 x 4CM (Deviation: 1-3CM) High quality, durable nylon.