Tough-1(R) Miniature Horse Muzzle Constructed of nylon with nylon mesh and a leather bottom. Adjustable nylon web straps with "quick grip" fasteners. Color: Black Sizes: Small Mini Circumference inside the nose band 13.5 inches Depth of the cup 3.5 inches Adjustable crown 19.5 inches-shortest - 23 inches-longest Regular Mini Circumference inside the nose band 14 inches Depth of the cup 4 inches Adjustable crown 20 inches-shortest - 24 inches-longest Note: Medium tag on product is referring to the Medium Nylon Webbing the manufacturer uses.