The Slumberdown Cosy Nights All Seasons Combi 15 Tog (10.5 + 4.5 Tog) Duvet is made up of two separate duvets that conveniently fasten together and come apart, depending on your needs. Use the lightweight 4.5 tog duvet for keeping cool on warm summer nights, or use the 10.5 tog duvet during transitional months when you require a more versatile, mid-weight duvet. You then have the option to combine the two, using the simple and secure press-stud fastenings, to create a super snuggly 15 tog winter duvet to ensure you stay warm and toasty the coldest of nights. The cosy hollow fibber filling is wonderfully comfortable, and the soft touch cover feels perfect to snuggle up into, creating a combination duvet that gently wraps around your body so you can be comfortable and still move freely through the night. COSY NIGHTS - Our duvets are made with a soft hollowfibre filling coupled with a soft touch cover giving you that cosy comfy feeling so you can enjoy great night s sleep all night long. 4.5 TOG + 10.5 TOG - Designed to offer you a 3 in 1 solution for all seasons. Our 4.5 Tog keeps you cool over the summer months while our 10.5 Tog is perfect for keeping you warmer on cooler nights. Both duvets can be fastened together to give you extra warmth on the chilliest of winter nights, keeping you extra toasty. NON-ALLERGENIC - Our duvets do not contain materials which are likely to cause allergies. WASHING MACHINE and DRYER FRIENDLY - We want to make life easier for you, that s why our product is washing machine and tumble drier friendly, so it can be back on your bed as quickly as you need it. MADE IN THE UK: Designed and Made in the United Kingdom.