Stone -  Heavy duty PVC sling is strengthened with nylon webbing and has steel support poles. Mounts to either front, or rear end tractor loader, or to block and tackle. Makes transporting a cow easy from pasture to barn. Can hold a cow comfortably 2-3 hours or longer to permit circulation and movement to return to cow's legs. Large udder cut-out prevents restricting udder and veins. Helps reduce the possibility of bruising or damaging nerve tissue.