RY-KY Products The COMFTABLE Fully Adjustable Deluxe Air Cushion Seat with Back Support, Black/Silver Adjustable removable air insert has recessed area that takes the pressure off the back and tailbone Can be used separately Adjustable side straps for back support, straps to seat or bleacher 2 built in soft side coolers, storage pocket and phone holder Carry handle, shoulder strap, or may be worn as a back pack 600D PU coated polyester material, weighs less than 3 lbs. and tested to 350 lbs.