Overview Stainless Steel Construction: Durable 304 stainless steel ball with premium ABS base for long-lasting use. Thermal Therapy: Special liquid-filled core enables both cold (6+ hours after freezing) and hot massage applications. Muscle Recovery: Effectively relieves muscle tension in shoulders, back, legs, and arms; widely used by athletes and physiotherapists. Ergonomic Design: Handheld roller ball with 60mm diameter for targeted pressure point release. Specifications Material: ABS base, 304 stainless steel ball, gel core Product Dimensions: Base diameter 7.3cm, height 6.5cm, ball diameter 6cm Color Variants: Black/blue, black/orange, black/green, black/rose red, blue/white, black/white Packing List Massage ball*1