Loumet produces an extremely durable roto-molded, air-filled, one-piece medicine ball that bounces, floats and doesn't break when hammered against hard surfaces. Loumet medicine balls are the most durable and reliable medicine balls on the market today, designed and manufactured to be used on all hard surfaces. The Loumet Medicine Ball can hold up to mud after mud and has been field tested and proven to just keep bouncing back at you for more. It combines the power of a dead-ball with the bouncing effect of a medicine ball.