The EquiFit Weighted T-Foam Liners for T-Boot Luxe Hind help build your horse's leg strength and encourage lift over jumps. These liners are a great training aid by encouraging proper technique. They are also fully adjustable with each removable liner weighing .25 lbs equating to 1 lb per individual liner or 2 lbs per set of liners. They are sold in pairs and are machine washable.