Thank you for viewing. This is the TS-24-0619-09 Myso Neck FC Cushion. It supports the torso with side pads and stabilizes the seated position firmly with pelvic pads and thigh pads. Size: Back cushion / Width 39.5 x Length 41 x Thickness 2.5cm, Side pads / Width 14 x Length 20 x Thickness 11cm, Pelvic pads / Width 14 x Length 15 x Thickness 11cm (when attached to wheelchair) Suitable wheelchair seat width: 38-42cm Weight: 830g (including side pads and pelvic pads) Materials: Polyethylene foam, low-resilience high-density urethane, cover / polyester