The Hammer Strength Medicine Ball offers a unique look and great function. The rugged design and textured surface aids in grip and durability — great for adding resistance to group training regimens. Not intended for ball “slams”. Size of ball will vary by weight. Rugged strength training equipment made for the elite athlete and those who want to train like one. For more than 25 years, Hammer Strength equipment has been used by professional athletes who compete at the highest level, as well as the top college and high school athletic programs. Hammer Strength equipment is built to provide performance strength training and reward focus and determination with results.