This giant squeeze ball can be used for wrist, hand and finger exercises. This anti-anxiety ball is filled with non-toxic gel and measures 3.5 inches in diameter. This fun giant stress ball is perfect for physical and emotional stress relief therapy. The Perfect Release Anxiety Item is all made from high quality thermoplastic rubber, non-toxic and he does not contain BPA. The stress relief ball is soft and safe for children. The surface is easy to clean, and even if it gets dirty, you can wash it with water to clean the surface and restore the viscosity. No one will love it and you should definitely relax with these. Unlike many other stress relief balls, these are extremely tear resistant and unbreakable. The stress relief ball is easy to grip and comfortable to hold. Great for stress relief. Relieve stress, anxiety and anger or use it to focus and get back to the task at hand while holding this stress relief fidget toy.