Constructed of heavy mesh, these boots are durable and easy to clean. The pliable yet rigid spine along with a rolled neoprene "Stopper ", located inside the boot above the fetlock, helps keep these boots upright and in place all day long. The interior seams are lined with foam padding for comfort and to prevent rubbing. Large "Quick Grip " straps, some with elastic, secure the boot and allow it to move with the horse. Sold in pairs.