The size of each pillow is 100mm x 200mm and there are approximately 600 air pillows in each 15 cubic foot bag. 30 cubic feet (i.e. 2 x 15 cubic feet bags) of pre-filled air pillows branded by Airspeed. Also known as air cushions, these provide excellent shock absorption for goods in transit, and are great for filling the gaps/voids in your parcels as a result, helping to avoid any damage to the goods.