The Versatility of all season’s duvet allows you to customize your sleeping experience according to the changing seasons and personal comfort preferences. This summer duvet tog is hypoallergenic which means it does not contain any materials that are likely to cause allergies. The 4.5 light weight summer duvet tog is generously filled with hollow fiber and covered in Micro Fiber that is soft to the touch to offer exceptional comfort throughout the night. White Noise Size: Double