Gowiss Backpack - Rated 20L/33L- Most Durable Packable Convenient Lightweight Travel Hiking Backpack Daypack - Waterproof,Ultralight and Handy Foldable CompactThe Backpack can be folded into zippered inner pocket to save space. It can also be unfolded from pocket to backpack which is convenient and space-saving. Durable and WaterproofMade of high quality water and tear resistant Nylon Material. BE AWARE: IF it falls in WATER i.e. lake or pool, it will leak through. "WATERPROOF" in this case means rain, snow, etc. Multi-Pockets to Keep Things OrganizedThis lightweight backpack features a classic shape with several pockets for storage and organization, including 3 zippered compartments, 1 roomy main compartment, 2 front zipper pockets, 1 internal security zippered pocket, and 2 side mesh pockets for your items to be separate and organized. Lightweight (0.46 pounds/0.5 pounds) and roomy (20 liters/33 liters) Dimensions: 20L: Unfold: 16.92x10.63x7.08 inches; Fold: 6.29x5.90x1.97 inches. /33L: Unfold: 19x13x8.2 inches; Fold: 6.29x5.90x2 inches. It is a true space saver. You can stuff the bag into its own pocket for storage to avoid overweight charges, and use it as a carry-on bag for your excess baggage. Multifunctional and WarrantedIt includes 90 days limited warranty for hiking backpack which is perfect for day trips, vacation, travel, day hikes, school, camping, bicycling and shopping etc and can be a great gift for everyone.