The Massage Balls are made with high quality nontoxic rubber and silicone combination, so they're unbelievably durable and long lasting. They're also nonslip so that they won't slip on the floor while you use them, yet they're soft for your skin. You won't have any skin irritation or redness after you use them. You can use the Therapy Massage Balls during many different workout routines. For example, apart from yoga, you can also use during Pilates, CrossFit, and during any type of training. It is a great Therapy tool for athletes and dancers, since it helps them maximize their athletic performance
