Hand grip strengthener is for improving strength and power.You can not only stretch the muscles in your palms and wrists but also strengthen the individual fingers,but also strengthen the individual fingers. The finger resistance bands can also improve finger strength for athletes (rock climbing enthusiasts,fitness,tennis,baseball,boxing,tennis,golf and ) and musicians (guitar players,bass players,pianists and violinists).See results fast using your hand exercise equipment. Fashion design,easy to use,put your thumb in the big hole,other holes one by one.Easy to clean,simply wash with water and soap,resistance fall,pliability,easy to stretch. Compact and efficient,help correct the imbalances caused by excess strengthen your muscles expansion-exciting. The exerciser has a small size and modern looking.Portable and ,easily fits into your gym bag or hand bag,you can get repetitions anywhere. How to use finger trainer: Slip loops onto fingertips centering oval indents Start with fingertips close together Open your hand all the way. Warning Tips: Stretch the products around your fingertips. Now we have improved our products - add the holes and try to avoid the problem of fracture. Follow the instructions and do it for at least 3 times,and remember,always hold your strength.and control the movement. Specification: Size: 7.7 x 4 x 1.3cm / 3 inch x 1.57 inch x 0.51 inch Color: Blue Quantity: 12pcs Material: Silicone Package Contents: 12 x Finger stretcher 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.