Made of machine washable, woven cotton outer material filled with new EXTRA THICK durable poly fiber. Porous material allows air to circulate. New strong stitch design throughout prevents fiber from bunching up. Now with new contour corners for better fit -- prevents horse from chewing and pulling off while in stall. Full 40 inch length. Sold in pairs. Available in 12, 14, 16, and 18 inch widths.