MANGROVE Ultralight Collapsible Waterproof Backpack 15L Two packs Expand your luggage or backpacking capacity in a snap with this foldable, packable backpack, available in a variety of colors Fold it into the integrated Simple Pack for compact stowage in a frame backpack or suitcase Tough ripstop nylon handles repeated folding, resist tears, and prevents fraying Waterproof fabric keeps the pack's contents dry from misting and occasional rainfall Pack large items like laptops and atlases with the simple one-compartment design. This pack measures 5.9 by 10.2 by 14.6 inches (15 by 26 by 37 centimeters).