1. Colour Changing Squeeze Balls Set: New colour change stress ball set, when you squeeze the ball, the stress ball will change colour magically. 2. Great Stress Relief Gift: This stress ball is suitable for all people of all ages, men, women and children. 3. Stress Relief: You squeeze, pull and them in your hands to help reduce stress, increase calm reduce tension and focus issues. Perfect decompression toy. Product name: Decompression vent ball Colour: random color , don't accept the specified color Material:Polyurethane Size:Diameter: 6.3cm Package Contents: 12 x Stress Reliever Ball Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.