This memory foam mattress topper is scientifically designed to support your body for a more restful nights sleep. It features strategically placed ripple, wave and swirl designs that distribute your body weight evenly, relieving pressure on head, shoulders, hips, knees and ankles. The mattress topper is made from luxurious 1in deep 40D memory foam that contours to the curves of your body. Gently aligning your spine, it eases aches and pains and keep you sleeping soundly throughout the night. The foam topper instantly springs back to its original shape after pressure is removed. Its also a great way to rejuvenate an old or lumpy mattress without spending a fortune on a replacement. For single bed: L190 x W90 x D4cm. For double bed: L190 x W135 x D4cm.