These wonderfully soft pure cotton anti-allergy duvets are made to the highest standards. These cotton filled duvets are finished with a 300 thread count pure cotton casing. Cotton is a natural temperature regulator which will help you stay cool on a warm summer night resulting in a great nights sleep.At Lancashire Textiles, we can't recommend this anti-allergy bedding enough, especially in the warm seasons when it is difficult to get sleep- you need to feel refreshed in the morning, and this lightweight duvet is sure to give you a peaceful rest.The 1 tog rating make this Lancashire Textiles duvet very breathable and cooling and the perfect summer duvet.