Features 1、Made of high‑density silicone material, safe and non‑toxic, eco‑friendly and firm, durable for use. 2、Designed with six hemispheres, these reaction balls can produce dynamic and unpredictable bounces, convenient for training. 3、It can be used on all hard surfaces or wall and can be used as an interesting way to improve the technique in exercises and training. 4、These reaction balls are very suitable for enhancing your hand‑eye coordination and can be used as rehabilitation and exercise tools. 5、Light weight and in small size, easy to store and carry, suitable for different occasion, help train your movement speed and reflexes. Specification Condition: Item Type: Reaction Ball Material: Silicone Product Size: Approx. 7 x 7 x 7cm / 2.8 x 2.8 x 2.8in Product Function: Exercise hand-eye coordination, improve concentration, improve reaction ability Package List 1 x Reaction Ball