Sold in a pack of ten. Plush liners provide comfort under hard splints. Plush terry-like, polyester and spandex liners have a comfortable amount of elasticity so liners cling nicely to the arm when wearing under hard casts. Made of 93% polyester, 7% spandex. Machine wash and air dry. The splint liner and thumb piece can be cut for a more custom fit. Can be cut for without fraying.