? FEATURES: ?Easy to use and addictive stress relief toys that you can easily put in your pocket and take with you. ?Featured with smooth rubber surface, soft rubber buttons, better joysticks and buttons, clear click and mute buttons. ?Help yourself concentrate: Suitable for people with attention deficit, as well as students, office workers and everyday entertainment. ?Unlike many other stress releasing balls, they are highly tear resistant and do not rupture. ?Relieves stress and focuses: Great for attention deficit/hyperactivity disorder, autism or anxiety, perfect for students, office workers and everyday fiddling.