Mattress topper: Get an 8cm deep mattress topper! Features: 8-9cm gusset sides and fits with four elastic corner straps. Construction: Filled with super soft 1000gsm microfibre. Cover: Made using 100% cotton 233-thread count percale cover. Size: Choose from double, king or super-king sizes. 8Cm Deep Mattress Topper | Double | Living Social