Adjustable Finger Hand Power Up Trainer Hand Grip Exerciser for Guitar Music Sport Player

Features:
Easy to train anywhere, whether in the traffic jam or in the evening cozy in front of the TV. 
Adjustable, flexible, good elasticity, not easy to deformation. 
Exercise fingers, promote the flexibility in the brain, fitness, save a space again. 
Strengthens your finger muscles and even parts of your forearm. 
Widely used for finger exercise when you play guitar, piano, bass, ukulele, saxophone, violin or orchestral instruments. 
Also suitable for most of the sport player. 
 
Specification:
Material:Metal plastic; 
Color:yellow purple(color random); 
Size:195x 395mm; 
 
Package Include:
1 x finger trainer