Whether you’re a professional training to compete or trying boxing or Muay Thai for the first time, a tough IBF Iron Body Fitness heavy punching bag is a must. The heavy-duty 22 oz. PVC-coated vinyl shell is hydraulically filled for even weight distribution with clump-free specially blended fibre. The heavy-gauge welded “D” ring allows you to tie down the bag from the bottom to prevent swaying while striking. A powder-coated steel chain and swivel assembly will keep your bag hanging tough.