Down is the extremely lightweight, comfortable insulating soft breast feathers of ducks and geese that they use to incubate their eggs. It's quite rare very costly, so Slumberdown created the next best thing! The lovely and snuggly hollowfibre filling is soft and comfortable, just like down, and the luxury microfibre cover feels wonderful to snuggle up into - it gently wraps around your body so you can be cosy and still move freely through the night. This 13.5 tog all seasons Feels Like Down duvet is ideal for all-year-round use made up of a lightweight 4.5 tog, and a mid-weight 9 tog duvet, you can use them separately as the seasons change throughout the year, or simply join them together with the secure fastenings to create a super snuggly and warm 13.5 tog winter duvet. Resembling a luxurious down duvet, but without a feather in sight, its non-allergenic which means its perfect for allergy sufferers.