- High quality material: finger strap made of durable silicone with a strong strap for a comfortable, universal fit on most fingers. - Combination set: includes 20 lb and 40 lb options, suitable for beginners and intermediate training as well as rehabilitation. includes finger cots. one-time purchase, reusable with easy replacement. - Ergonomic design: isolates and trains each finger's flexibility and endurance separately. the design maximizes the activity range during exercise with the adjuster, without requiring a specific wrist circumference or wrist wrapping. - Expert endorsement: recommended by doctors and technicians in various fields; commonly used by musicians and physiotherapists to train hands for health. - Practical use scenarios: 1) Finger dexterity training for musicians (guitar, piano) to improve control and precision. 2) Post-injury or post-surgery hand rehabilitation with progressive resistance. 3) Everyday hand strength and endurance for typing, gaming, or precision tasks.