The D'Addario Varigrip and FiddlLink Bundle gives you two amazing hand fitness products to help you develop and maintain the strength and dexterity of your fingers, hands, and forearms. Varigrip features an ergonomic design with variable tension, which is customizable for each individual finger. Beneath the reversible molded grip are simulated strings to help maintain finger calluses when you're away from your instrument. FiddlLink helps you improve coordination on-the-go. Continuously invert the linked plastic hinges to give your hand a workout, subtly expanding your physical conditioning and playing capabilities. With this bundle, you’ll be able to advance your circulation, speed, fine motor skills and overall hand health anytime, anywhere.