The Pump Sack from Vaude is a lightweight pump sack with integrated pump function, so it can be used to inflate an air mattress or sleeping pad. Simply dock it onto the valve, shake the sack up and then roll it down from the top. You'll be bedded on air. The valve fits most standard pads on the market. By using the pump pillow you also avoid moisture (from your breath) from collecting inside the pad. The pump sack needs near to no space and can also be used as a waterproof stuff sack for your sleeping bag or other gear. The VAUDE Green Shape label stands for environmentally friendly, functional products made from sustainable materials.