The Kulala Mesh Crib Liner helps keep arms and legs safe inside crib slats. It's mesh design keeps baby cooler in warmer temperatures. The 4-piece liner measures 10 inches high x 156 inches long. The short sides are 10 inches x 27 inches with ties in each corner. The long sides measure 10 inches x 51 inches with 4 sets of ties along the top and bottom. The woven fabric is made of 67% polyester and 33% cotton. The mesh fabric is 100% polyester. Fabric content is exclusive of decoration. Care instructions: machine wash cold separately in gentle cycle, use only NON-chlorine bleach when needed, line dry, and do NOT iron.