#winning Emoticon Stress Balls 3 Set Various Firmness Hand Therapy Stress ReliefA Trio of Hand Sized Moulded Polyurethane Foam Colour Coded Stress Balls with Various Different Firmness Each Ball has a Different Resistance with the Yellow Ball Being Medium, Orange Medium Firm and Red Being Firm With Increasing Resistance this Trio Set of Stress Balls are Also Ideal for Strengthening Grip and Improving Dexterity Makes an Ideal Gift for Stress Relief, Sensory Therapy, Anger Management or as a Silent Alternative to Fidget Toys Comes