What material are the covers made of?
All designs except the squidgits have hygienic washable covers. They are made of a fleece fabric on one side and a soft brushed cotton on the other side. The fleece side is usually placed away from the body and acts as an insulator, helping to hold the heat longer whilst the soft brushed cotton side allows the heat to penetrate the body. If you prefer a milder heat, the fleece side can be placed against you.