Tilts the pelvis to the optimum 11 degree keeping the spine in its natural position. - Significantly decreases pain in the lower back and legs - Available with optional coccyx cut out and/or fixing strap - Size: 36x36x10cm (14x14x4"). 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.