Silica gel, a surface material of about 172CM, is non-toxic and environmentally friendly. In the interior, rubber particles and rubber foam are used to foam sand bags on the top and on the bottom of the base. The contact area is PVC material base with water or Gaza base with reinforcement sucker (about 90KG after water addition). Boxing is a very challenging sport, it has the same benefits of anaerobic exercise like running and other similar sports. Its training builds our unique blend of speed, strength, and endurance. It is a common thing among the young practicing boxing using the punching bag to train up their strength and endurance, not for competition or having an opponent. Think of it as training and get yourself in shape. The heavy bag allows you to use different styles and techniques, either moving side to side and pinging off jabs, right crosses, and other long-range punches, or stepping in close and using crunching short-range hooks and short-range uppercuts. The heavy bag can be used to improve speed, strength, and endurance by configuring the rounds, punching rate and punching style accordingly. It’s also a great way to relieve stress at the end of a hard day!