Sizes: Choose from double, king or super king sizes. Mattress topper: Add extra depth and comfort to your bed with a mattress topper. Versatile: Adapts to your body temperature by offering freshness in summer and warmth in winter. Breathable: Offers maximum air circulation and is designed to help you feel relaxed and comfortable whilst you sleep. Filling: 4cm deep and filled with 100% polyester. Easy to apply: Features elasticated straps for secure application. | 4cm Carbon Mattress Topper - Double | Wowcher