3 pieces hand trainer ball: This finger trainer set includes 3 balls with varying resistance levels. The yellow ball offers soft resistance, the red ball provides medium resistance, and the blue ball delivers firm resistance. Ideal for improving finger mobility and supporting rehabilitation of the fingers and forearms, this hand exerciser set is designed for regular hand and grip training. The hand training balls are made from high-quality thermoplastic rubber, ensuring durability and long-lasting use. Their oval, egg-shaped design fits comfortably in the hand, and the slightly textured surface helps prevent slipping during use. These hand exercise balls are washable and can be easily cleaned with water after each use. Lightweight and portable, they can be used anytime and anywhere. Suitable for a wide range of users, this hand strength trainer supports dexterity and grip development. It is commonly used by individuals engaged in activities such as climbing, bodybuilding, fitness, tennis, baseball, boxing, and golf. The set includes one yellow ball, one red ball, and one blue ball. Made from 100% high-quality thermoplastic rubber, the balls are hypoallergenic and non-toxic. Package includes: 1 x Yellow Ball, 1 x Red Ball, 1 x Blue Ball