Model Number: sports stretchy bouncy ball--#1000 Key Specifications/Special Features: 45mm mini sports stretchy bouncy ballSize: diameter is approx 45mmMaterial: outside ball is TPR material and inner with EVA. All material is safe to export and reach to CE, EN71, 6p, ASTM test standardFeature:1) Can squeeze it and stretch it. It's soft and have good feel. When you release it and it will come back to original shape slowly2) Can bounce. you can play it as a bouncy ball3) It's a good stress ball. Suitable as a promotion gift4) Suitable for +3 age5) It's a better stress ball than PU material