If You Often Feel Warm This Thinner Duvet Feels Cool To The Touch And Soothing. The Lyocell Fibres In The Fabric And Filling Absorb And Transport Moisture Away From Your Body So You Experience A Dry And Comfy Sleep. A Good Choice If You Are Allergic To Dust Mites Since The Duvet Is Machine-Washable At 60°C, A Temperature That Kills Dust Mites.