1. RECOMMENDED: Hand yoga is being used many international in fields such as musicians, therapist, doctors, and technicians for their healthy hand and finger. 2. HIGH GRADE MATERIAL: Finger band is made of silicon with great elasticity and high grade neoprene and strap make the product perfect for anyone! 3. BEST HAND EXERCISER: You can individually or with different tension force applied. 4. ERGONOMIC DESIGN: This perfect design leads you maximize of range in exercising. Adjustable wristband can be anyone with comfortable fit, regardless of wrist circumference. 5. COST EFFECTIVE: Do not have to buy other item for your hand . You can use it for your right and left hand both with simple way at any place. Who needs hand yoga? /rehabilitation therapist. Doctors, technicians, etc. who need elaborate manual labor. A musician like pianist, violinist, etc. Occupations that frequently use computer keyboard such as office workers. Specifications: Name: Finger Extensor Exerciser Tension: 20lbs Material: Silicone colour: Green Package Contents: 1 x Hand Grip Strengthener Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.