Gorgeous tendon boots with a perfect fit. With strong, elastic closures. The special button closure eliminates the need for Velcro. The ventilation holes in the shell combined with the air neoprene provide ventilation and aeration. The optimal fit allows the horse plenty of freedom of movement. The TPU outer shell protects against impacts and has an extra thickness on the tendon and fetlock for additional protection.Shell length at the back: 15 cm (17.5 cm including neoprene).Neoprene thickness: 5.5 mm.