This memory foam cushion provides exceptional and unrivalled value for money - A base of high resilient polyurethane foam provides stability and support - Whilst a bonded upper layer of visco elastic memory foam provides the comfort and pressure relief required - The memory foam conforms to the user's body, providing continuous and even pressure distribution - Supplied with Harley Dartex waterproof / VP cover - Other options available. Suitable for patients up to medium risk (with appropriate nursing care). 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.