The Sherpa Beds are made from the highest quality Sherpa available. They are very thick with dense fibers for great comfort. The Sherpa Beds are made of 2 layers of this sherpa. The beds are also hospital grade material which makes them antibacterial. They are great for summer or winter, they will insulate your dog from the heat of the summer and protect from the cold of the winter. The Sherpa Beds also are safe to machine wash & dry.