Improve your grip, punch power and correct form when delivering punches. The neoprene outer shell and durable flexible rubber interior give you the perfect muscle memory tool to clench your fist when you punch. Helps to perfect the extra "snap" of your punches. Ideal for shadow boxing, working out on the go and in individual training sessions. Each handle measures 10cm in length and 7.5cm in circumference, so it fits your fist ergonomically and professionally.  Comes in pairs.