Colour Name:YellowCustomized Tension: Isolate each finger for targeted strength training. From light to heavy, the tension canbe changed from 4 lbs. to 7 lbs. Perfect for kids to use. After Sale Services: Any questions, please contact us immediately for solution. We will work with you to solve any problem you may have. Material and Appearance Design: Made of high-quality soft plastic and stainless steel springs. Four pistons, each spring loaded, allow you to work individual fingers to improve grip strength and dexterity. Stronger fingers cant compensate for the weakerones. Isolate each finger for targeted strength training. Build Strength and Dexterity: With this finger exerciser, kids can develop and maintain strength and dexterity in their fingers, hands and forearms. The ergonomic design and over molded finger pads and grip help make childrens conditioning workouts comfortable. Widely Uses: Whether you are warming up pre-show or conditioning when youre away from your instrument, the exerciser is the ultimate portable workout. Can put it in luggage, pocket, purse, handbag etc. Easy for kids to carry and use. Colour Name:Yellow 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.Adjustable individual press tension, the tension ranges was from 4LB to 7LB. Can select different tensions for each finger, providing one-to-one children hand fitness. 4.Soft and comfortable pressing, will not hurt children fingers. Adjustable strength range was between 0-2LB. 5.Lightweight and portable, can put it in luggage, pocket, purse, handbag etc. Specification: Material: Plastic + rubber Color Options: Red Size: Approx. 9 x 7 x 2cm / 3.5 x 2.8 x 0.8in Package List: 1 x Children Finger Exerciser