A package of two Myo Therapy balls - 3" medium firm smooth closed cell MyoBalls provide the good penetration to soft tissue. They are slightly larger than a tennis ball but firmer. Penetration can be reduced by using on a softer support surface such as a workout mat. With regular usage increase flexibility, improve circulation, and increase muscle strength.
*First Class USPS shipping is included (USA only)
"Many times I've heard claims that the material of a massage tool is “special,” and found the claim to be as inflated as the price. But these balls not only do feel kind of special to me, but they are inexpensive as well"