The fascia ball is made of rubber, which is safe, non-toxic, tasteless and long-lasting to use. The fascia ball can release and eliminate muscle knots and tension, relieve sore and tight muscles to rejuvenate and revitalize all areas of the body. Simply lean on the massage ball and use your own body weight and gravity to relieve muscle knots and tension. Perfect for use sitting on any chair, lying in bed, on the floor or on a yoga mat. Use them at home, in the office or at the gym. The fascia ball is small, portable and easy to take on any trip. High quality and durable: Our massage balls are made of non-toxic natural rubber for a superior feel and durability, without harming the skin and body. 100% Solid Rubber, no cracking and anti-slip after repeated use. Color: Blue Material: Rubber Size: Diameter: 63.5mm Package Contents: 8 x Lacrosse Massage Ball Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of