1.TPR Material These reaction balls are made of TPR material (Thermoplastic Rubber). Known for its durability, flexibility and wear resistance, TPR ensures that these balls will survive countless training sessions. 2.Unpredictable Jump Design The unique hexagonal shape of these balls makes for an unpredictable and irregular jump. This design challenges your reflexes and coordination and makes your training sessions more dynamic and effective. It helps improve your reaction time, handeye coordination and overall agility. 3.VERSATILE TRAINING EQUIPMENT These reaction balls are perfect for a variety of sports and fitness activities, including basketball, football, tennis and general fitness training. They can be used by athletes of all levels, from beginners to professionals, to improve their reflexes, coordination and quick thinking 4.EASY TO CARRY AND STORE The compact size and lightweight design of these reaction balls make them easy to carry and store. They fit easily into a gym bag or backpack so you can take them anywhere. Whether you're working out at home, in the gym or outdoors, these balls are always ready to go Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia