Theracube cushions are ideal for pressure reduction when sitting for long periods. They support the user due to the high density grade of foam, while the castelated cushioning ensures even weight distribution.The Theracube has a rounded front for comfort and is tapered front to back which helps to stop sliding forward. The deep channels allow air to circulate for less heat build up.This cushion is ideal for wheelchair users.Standard: L46cm x W40.5cm x D7.5cm (18? x 16? x 3?)