Temperature Regulating Duvet 4.5 Tog Specially designed to manage changes in body temperature that affect sleeping patterns throughout the night, this duvet has a 100% cotton casing which absorbs heat from the body if you get too warm and releases it again when you start to feel colder. The internal Air blend filling has a premium down-like feel with a lofty, luxurious handle. Perfect for allergy sufferers and naturally dust mite resistant. Filled with Airblend â„¢ with the feel of a natural duvet. Perfect for those who want to add a little luxury to their bedroom 100% cotton casing with temperature regulating technology to balance body temperature throughout the night Lightweight, soft and warm Naturally dust mite resistant Perfect for allergy sufferers Sizes Single Duvet: 135cm x 200cm Double Duvet: 200cm x 200cm Kingsize Duvet: 230cm x 220cm Super Kingsize Duvet: 260cm x 220cm