Tuck Osprey&';s ultra-light Stuff Pack in the bottom of your duffel bag and you&';re always prepared for a spontaneous hike or shopping excursion. Weighing in at a mere four ounces, this tiny pack boasts heavyweight features. Specs Volume Dimensions Weight O/S 1098 in3 / 18 l 17h x 9w x 7d in. 0.2 lbs. Fabric Main: 40D Nylon Ripstop Accent: 40D Nylon Ripstop Bottom: 40D Nylon Ripstop Features Top zippered slash pocket Dual zippered main compartment Stretch mesh side gear or water bottle pocket Ultra-compact, built-in storage pocket