Professionals Recommended: Hand Yoga Is Being Used Many International Professionals In Various Fields Such As Musicians, Physical Therapist, Doctors, And Technicians For Their Healthy Hand And Finger. High Grade Material: Finger Band Is Made Of Silicon With Great Elasticity And High Grade Neoprene And Strap Make The Product Perfect For Anyone Best Hand Exerciser: You Can Train Fingers Individually Or Together With Different Tension Force.It Is Mainly Focused On The Fingers And Overall Part Of Hand Rehabilitation And Exercise Of Muscle. Material: Silicone + Alloy + Cloth Size: 40lbs-Blue Package list:1 x Finger Extensor Exerciser Quantity: 1piece Note:Manual measurement, there may be 1-2cm/1-3g error, which is not a quality problem. Due to different screen displays, there may be a color difference between the real object and the picture, and the main picture shall prevail.