Premier Equine Air Cooled Original Eventing BootsMade from a combination of 2520D ballistic nylon and microfiber leather. The strong yet supple microfiber leather covers the important parts of the boot, around the fetlock, straps and strike guard. They incorporate Eva lining, which is water resistant and helps prevent the boots retaining water and becoming heavy on the horse's leg. Excellent protective horse boots for the cross country phase How do Air Cooled Eventing Boots work? As the horse