The Fine Bedding Company Breathe Duvet is a highly breathable, clever sleep technology duvet made up of 80% Smartfil® Microfibre and 20% Modal. This luxuriously soft Breathe™ duvet optimises temperature regulation throughout the night so you will never be too hot or too cold again. The cover is 100% breathable Microfibre with a textured bubble design.Breathe Duvet FeaturesAvailable in 5 weights and 4 different sizesHighly breathable80% Smartfil® Microfibre, 20% ModalTextured bubble designTemperature regulatingNon-AllergenicFour Seasons duvet fastens together with poppersSmartfil® duvets achieve the same thermal efficiency as a premium down duvet in the equivalent tog, but are filled with much finer fibres thus creating a warm, cosy duvet that feels incredibly light and breathableA guide to duvet tog ratingsTog is a measure of warmth, the higher the tog rating, the warmer the duvet as indicated in the guide below:4.5 tog: for Summer use10.5 tog: for those with central heating or who share a bed13.5 tog: for colder seasons or for those who prefer a warm duvetFour Seasons: 3 warmth options from 2 duvets: 4.5 tog for Summer, 9.0 tog for Spring / Autumn and joining them together to make a 13.5 tog for WinterThe Fine Bedding Company\'s ref.MPN: Single: A1UDFNBR4.5S, A1UDFNBR7.0S, A1UDFNBR10.5S, A1UDFNBR13.5S, A1UDFNBRF/SSDouble: A1UDFNBR4.5D, A1UDFNBR7.0D, A1UDFNBR10.5D, A1UDFNBR13.5D, A1UDFNBRF/SDKing: A1UDFNBR4.5K, A1UDFNBR7.0K, A1UDFNBR10.5K, A1UDFNBR13.5K, A1UDFNBRF/SKSuper King: A1UDFNBR4.5X, A1UDFNBR7.0X, A1UDFNBR10.5X, A1UDFNBR13.5X, A1UDFNBRF/SXColour: WhiteSizes: Single, Double, King, Super King, Four SeasonsPM Ref: 900649