The ProFit VibraBall is our most compact design, while still delivering a high-quality muscle therapy experience. This fabulously invigorating massage ball features three intensity levels ranging from 2600-4500rpm, as well as an auto mode that varies the intensity level throughout the massage session for optimal relief. Easy to throw in your backpack, purse, or gym bag—the ProFit VibraBall strikes a near-perfect balance between power and size.