The carbon claw recoil rx 7 7 inch reaction floor to ceiling ball is made from leather and has been stitched together by machine for extra strength and durability inside there is a sewn in supa safe rubber bladder which has a butyl valve to help minimise air loss this boxing training tool will help you develop your hand eye coordination reflexes boxing technique and general fitness to maximise your workouts attach the reaction ball in an open area so you can move 360 around it