Perfect on an upright type seating appliance. - A base of polyurethane foam bonded to a topping of pressure relieving visco elastic memory foam - Provides maximum comfort as it adjusts to the natural curve of the spine - Size: 38x41cm (15x16"). 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.