Cold Massage Roller Foot, Shoulder, Neck, Waist, Arms, Legs, Grey Massage Ball Description: Easy to use: the massage ball combines ice and massage, put it in the freezer for 2 hours and use for massage for up to 6 hours or put it in hot water for 5-10 minutes for 20 minutes for a warm massage. Material: The massage ball is made of 304 stainless steel, ABS base is easy to grasp. Portable and compact: 2,75 inch diameter massage ball, suitable for use when lying in bed, on the floor or on a yoga mat, at home, in the office or at the gym. Cold/hot massage: The massage can be removed to regenerate muscles and relieve joints. Application: Suitable for massaging arms, neck, upper back, arms, legs and feet. Size Chart: Base diameter: approx. 8,5 cm / 3,35 inch Height: approx. 7,5 cm / 2,95 inch Ball diameter: approx. 7 cm / 2,75 inch The package includes: 1 piece cold massage roller Note: 1. 2. Due to the difference between different monitors, the image may not reflect the actual color of the item. 3.