The Silentnight Airmax 800 Mattress Topper will transform your existing mattress, providing unparalleled breathability for a comfortably refreshing night's sleep. Specially designed to increase airflow, the Airmax topper features dual construction which allows air to move freely in-between the layers. The air mesh sides help this air to move freely around your body to keep you comfortable in every season. Deeply filled with hollowfibre, the 8cm dual layer construction also provides ultimate comfort and will help to refresh and rejuvenate any mattress.