Features: 1.Specifically Children all?in?one hand exerciser design for many musical instrument. Also can be used for children finger strength exercise in daily life. 2.Provides complete strength training solution, safely and conveniently to increase strength, endurance, flexibility and coordination for children fingers, hands, wrists, and forearms. 3.Suitable for finger strengthening for guitar, piano, trigger ringer training, arthritis therapy and rock climbing. 4.Soft and comfortable pressing, will not hurt children fingers. 5.Lightweight and portable, can put it in luggage, pocket, purse, handbag etc. specification: 1.Specifically Children all-in-one hand exerciser design for many musical instrument. Also can be used for children finger strength exercise in daily life. 2.Provides complete strength training solution, safely and conveniently to increase strength, endurance, flexibility and coordination for children fingers, hands, wrists, and forearms. 3.Suitable for finger strengthening for guitar, piano, trigger ringer training, arthritis therapy and rock climbing. 4.Soft and comfortable pressing, will not hurt children fingers. 5.Lightweight and portable, can put it in luggage, pocket, purse, handbag etc. : Material: Plastic + rubber Color Options: Red, Yellow Size: Approx. 9 x 7 x 2cm / 3.5 x 2.8 x 0.8in Package List: 1 x Children Finger Exerciser