material Silicone finger strap with an adjustable strap ensures a comfortable, durable fit for most users. Set and versatility Includes a combination of 20 lb and 40 lb resistance levels, suitable for beginner to intermediate training and rehabilitation. Comes with finger cots and is designed for a onetime with reusable parts for easy replacement. Ergonomic design and function Ergonomically designed to isolate and train the flexibility and endurance of each finger separately. The adjuster maximizes the active range of motion during exercise without requiring wrist circumference. Professional use and validation Recommended by doctors and technicians across fields. Used by musicians and physiotherapists to train hands for health and performance. Use scenarios For musicians such as pianists or guitarists to improve finger independence and dexterity. For hand rehabilitation or late rehabilitation, assisting with gradual finger strengthening. For professionals or athletes who need precise finger control and strength, such as technicians, typists, or other to ensure better hand performance. Product highlights Function: independent finger training with adjustable resistance. Compatibility: adjustable strap to fit a wide range of finger sizes. Size and fit: one size with adjustable features to accommodate most users. Material: quality silicone for comfort and durability. Performance: two resistance levels (20 lb and 40 lb) designed for progressive training and rehabilitation.