The Sensory Genius' line of Stress Balls allows busy hands to be productively active so the mind can focus. A gentle texture and squishy composition make these colorful balls hard to ignore. Three different levels of resistance provide the right amount of stress relief or hand strengthening exercise. Sooth anxiety, increase blood flow to fingers and hands, and build strength. Details:Green, yellow and pink3 sets with 3 balls each, 9 balls totalGentle texture with squishy compositionFor ages 5 and up