Made of high-quality silicone, not easy to break. It is washable and can be used for fun often and comfortably. 
 
Squeeze this rubber toy that fits perfectly in the palm of your hand. Squeeze to press the suction cups together and release for a satisfying blast. Anti-stress toy: This toy allows you to enjoy the joy of pressing. It can help promote calm, concentration, or can be used as a toy when you're out of your time. The toy is a household necessity, preschool toy, great for parent-child play or stimming tool.
 
Manufactur suggested uses:
Training and exercise: it helps to strengthen the wrist, improves the flexibility of the fingers, increases the strength of the hands, and can also reduce fatigue.
 
Rehabilitation toy: suitable for rheumatoid arthritis, arthritis, carpal tunnel, tendonitis, tennis elbow.