The Silentnight Responsive Memory Foam Mattress is a next-generation memory foam mattress. Featuring highly advanced memory foam, you'll get plenty of comfort - with extra support too. Nestled on a sturdy Miratex foam base, you'll get essential support across your back, shoulders and hips. Wrapped in a soft-touch knitted cover, it's hypoallergenic for a healthier sleep. Always kept in stock, get this mattress sooner with Free Next Day Delivery. It comes complete with a worry-free 3 Year Guarantee too.