Designed to develop and maintain the strength and dexterity of your
fingers, hands, and forearms, the D’Addario Varigrip features an
ergonomic design and variable tension that is customizable for each
individual finger. The reversible molded grip even uncovers simulated
strings to help develop and maintain finger calluses when you are away
from your instrument. D’Addario Varigrip, the ultimate conditioning tool
for musicians. Note: Varigrip is an exercise product. Stop use
immediately and consult a health care professional if you feel pain or
discomfort while using the product. Excessive use may cause pain or
injury.