20L Ultra Lightweight Foldable Backpack Small Hiking Rucksack Ultralight Water Resistant Travel Packable Daypack for Men Women for Outdoor Sport Travelling Walking Hiking Camping BikingSpecificationMaterial: PolyesterColor as shownSize: as shownQuantity: 1pcs foldable backpackFeatureConstructed with 1 main pocket,and 2 mesh side pockets. Main pocke..