The layered fills allow the liner to taper to your horse's body, fitting more comfortably and creating a warm breathable space under the outer rug. The liner clips into your top rug by Velcro loops that attach at the neck and 2 clips on the back corners. The 4 attachment system prevents any slipping. When needed, you can easily wash your liner in a domestic washing machine. Available in sizes 5'9 to 6'9.