BetterLiving Seating Wedge - Ideal for people sitting for long periods, this multi-purpose foam seating wedge helps maintain the natural curve of the spine and alleviates nerve pressure in the lower to mid back area. The angle of this cushion is nine degrees, which is anatomically desirable to encourage correct pelvic tilt to reduce pressure on lumbar discs so minimising potential back problems. While this cushion is normally used with the lower end in front, when used in the car it can be turned the other way to prevent you from sliding downward or lower back strain. This wedge measures 10 ; 6 cm high, 43 cm wide and 40 cm deep. It suits people to a maximum weight of 100 kilograms.