Always be ready with the Osprey Ultralight Stuff Pack. Weighing just 4 oz., this packable backpack features a dual-zip main compartment, stretch mesh bottle pocket, and top zip slash pocket. It packs into its own pocket for easy storage and is backed by Osprey's All Mighty Guarantee. Complies with CPSIA, Prop 65. 7.48" W x 16.54" H x 8.66" L