New Revolutionary Sleeve is an ultra-light weight sleeve with thri level bite bar. Sleeve has extra handle for best control and design to provide a quick reward release. There is no metal or outside plastic parts. Covers are replaceable. New Revolutionary Sleeve is ideal for sport dogs, guard dogs, police and military dogs training. This sleeve provides a good foundation building of bite work. This sleeve is ideal for teaching targeting on the forearm (aids in preventing end-biting).