For complete protection for the horse that performs hard stops or tight turns, this Combo 4-Pack comes equipped with VenTECH Elite Sports Medicine Boots for the front legs and VenTECH Slide-Tec Skid Boots for the rear legs. Both boots feature the Professionals Choice uniquely breathable VenTECH lining to prevent overheating and provide 360 degrees of protection. In addition, the VenTECH Elite Sports Medicine Boots provide support to the front legs tendons and ligaments, while the rear VenTECH Slide-Tec Skid Boots extends to bulb of the heel, preventing dirt from penetrating the boot and causing burns during sliding stops. In addition the skid boots feature a padded leather patch on the inside of the fetlock and recessed threads on a skid cup that wont wear out. Hook fasteners for both pairs of boots adjust to fit any horse.