Horse Neoprene Sport Medicine Boots Black Size: Small (10 " fetlock circumference, 10 " boot height, 13.3-14.1 hands) Size: Medium (12 " fetlock circumference, 11 " boot height, 14.2-16.2 hands) Size: Large (12 " fetlock circumference, 12 " boot height, 16.3-17.2 hands) Size: Extra Large (Extra Large: 13" fetlock circumference, 13" boot height, 17.3-18.2 hands ) Color: Black