If it is not comfortable, you will not use it. That is the premise behind the new, ergonomically designed SPORTSGRIP. Produced by a team consisting of Certified Hand Therapists, MIT Engineers, and Designers (27 years experience producing Hand and Finger exercise products), we have succeeded in producing the most comfortable and ergonomic hand and finger exerciser on the market. Our customers tell us they keep it on their desk or in their pocket and are just drawn to use it all the time.... thus, quicker results. The SPORTSGRIP is great for just about every athlete who wants to improve their grip, strengthen their hand and fingers, improve endurance and coordination, or increase their finger control and mobility. Hand and Finger Exercisers are used by athletes involved with Football, Tennis, Golf, Baseball, Hockey, Basketball, Lacrosse, Bowling, Rock Climbing, Archery, Curling, Volleyball, Boxing, Martial Arts, Cricket, or Soccer Goalie. Available in White - Medium (5-lbs), Silver - Hard (7-lbs), and Black - Xtra-Hard (9-lbs).