Material: Our product is made of high-density TPR, which has high reducibility, non-toxicity, and reusability. Our pressure reducing balls are lightweight, sturdy, and durable, suitable for use by children and adults. <br><br> Use: Our products can be divided into hand massage, wrist strength training, hand acupoint activation, and finger strength training. For stroke rehabilitation patients who have been engaged in driving, typing, writing, home and office work for a long time, it will be an excellent manual exercise device. Through exercise and training, you will gradually move your fingers forward and learn guitar, piano, violin, and rock climbing. <br><br> Massage effect: When people use this product for wrist movements, it can deeply stimulate the palm acupoints or relax the muscles of the whole body, playing a local massage role. <br><br> Decompression ball: Through simple exercise, it can greatly relieve daily stress, enhance the strength of the forearm and fingers, stimulate the blood circulation of the palm, and achieve the effect of systemic blood circulation. It has high antennae, moderate hardness, durability, and can deeply stimulate acupoints. <br><br> Convenient to carry: Finger strengthening balls are lightweight and can be placed in your bag, anywhere you want, suitable for many occasions such as school, home, office, etc.