Made of high quality environmentally friendly silicone. It has the advantages of softness, no cracks, long life and no skin irritation. Exercise your fingers, improve your brain flexibility, and exercise in a healthier way. Correct the imbalance of individual fingers and strengthen the finger muscles. You can train fingers individually or together with different tension force applied, improve hand flexibility and strengthen joint range of motion. Essential exercise equipment. Suitable for the elderly, rehabilitation groups, women and so on. Perfect for athletes (rock climbing, basketball player) musicians (Guitar/ Bass Players, pianists or violinists) and more! Specification: Length: Approx. 6cm/2.363inch Material: Silicone Package Includes: 5 Piece Finger Trainer Band Note: 1.Please allow 1~3 cm error due to manual measurement, thanks. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you.