Aeromat's Dual Grip design is made of a patented Neuwa material. These medicine balls are latex and phthalates-free, which means they are environmentally-friendly. The new, patented, rubber-covered handle design offers more freedom and comfort during exercises. Dual grips provide versatility for more function and core training. Equipment: Other Equipment Medicine Ball Type: Handles Great for abdominal, strength, and rotational movement training Not designed for bouncing medicine ball exercises 9 inches in diameter