TKO Firm Resistance Hand Grips, Finger/Forearm Strengtheners, Onyx/Lime Increase your hand strength, improve forearm muscularity and heighten overall muscle endurance Strong, durable construction for continued use and ergonomic foam handles for increased comfort Compact size makes it the perfect on-the-go exercise tool you can take anywhere; Also works as a stress management tool Hold weights for longer periods of time, rock climbing with more dexterity, increasing your power behind a racket or bat Simple and easy way to get more out of your workouts; Up your fitness program and see the difference