An ideal 8º angle ensures the natural 'S' shape of the spine is maintained. - A base of high resilient foam bonded to a topping of visco elastic memory foam - Even weight distribution - Supremely comfortable - Available with optional coccyx cut out and/or fixing strap - Size: 36x36x7cm (14x14x2¾"). If this product is showing as out of stock (red dot), please note that as we manufacture this product on site it can normally be manufactured and available within 2/3 days of receiving your order.