The original comfortable, functional, effective, lightweight, and durable veterinary medical collars since 2008. Available in multiple sizes, machine washable, and made in the USA. Soft, yet sturdy, our collars will not collapse but can fold back for eating and drinking, and then pop right back into shape. Veterinarians love and approve of our collars! Our XS Size collar fits necks with a 6.5 to 10 10-inch circumference and has a 4.5-inch depth. Our Small Size collar fits necks with a 7 to 11-inch circumference and a 5-inch depth. Our Medium Size collar fits necks with a 9.5 to 13-inch circumference and a 6.5-inch depth. Our XL Size collar fits necks with a 13.5 to 17-inch circumference and a 9-inch depth. Our 2XL Size collar fits necks with a 18 to 24-inch circumference, and an 11-inch depth. Our 3XL Size collar fits necks with a 22 to 26-inch circumference and a 16-inch depth.