relieve muscle soreness improve flexibility Hand Grips 6.6LB/3KG 8.8LB/4KG 11LB/5KG Soft touch Silicone finger trainer Gripping Ring Rehabilitation exercises, Please select specifications

Specially designed scientific training methods for fingers, finger outward tension strength exercises. The fingers, palms and arms can be trained, the muscles are synchronized training, and the entire hand is exercised. Expandable fingers, get good coordination when playing guitar and piano. Small size, easy to carry. It's soft to the touch. The flexibility of the fingers can be improved through training. NO BPA odorless.syi