RumbleRoller Beastie Massage Ball & Base - Firm Grip Both are made of rubber

Both are made of rubber

and resilient

Less than 1/2 gram of fat

GRIP DIAMETER - 28 mm / 1

All other accessories

RumbleRoller Beastie Massage Ball & Base - Firm Grip Both are made of rubberWith a perfect combination of bump placement, size, firmness, and flexibility, the Beastie overcomes the limitations of other massage balls. It's an excellent addition to any deep tissue tool set. TROUBLE SPOTS When a dense knot of muscle is unresponsive to foam rolling, try a Beastie. Nothing works better for really deep, focused massage. Use with detachable base for even greater control. LIMITED SPACE On the go? A Beastie fits easily in any bag,