Moulded visco elastic memory foam has revolutionised this concept offering increased comfort and pressure relief. - The Designer Ring allows the user to sit for longer periods as visco elastic foam conforms to the body and literally 'moulds as you move' - Reduces interface pressure on the body - Superbly comfortable and pressure relieving - Fitted inner cover - Outer cover available. 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.