Amazing, tough as nails solution to a medicine ball,kettlebell,slam ball,dumbbell and barbell wrapped up in this powerful tool called Steelbell.  Durable neoprene shell filled with steel shot.  Great for learning kettlebell movements, sledgehammer slams, shot put... Press em, swing em, slam em, toss em, heave em, carry em, or grip em.  Once you get one, you'll wonder how you did without!