Our cosiest ever duvet, the Silentnight Warm & Cosy Double Decker 18 Tog Duvet is perfect for coldest winter months. The unique double decker design features two generously filled duvet layers sewn together to create a warm air pocket that retains heat for maximum warmth and comfort. Covered in a soft, comforting fabric that is sumptuously soft and cosy, and doesn’t contain any materials likely to cause allergies. Silentnight are the UK’s most trusted sleep brand with over 75 years’ experience in creating products for every sleeper. Silentnight Size: Super King (6')