Pack of 3 hand trainers. These hand trainers offer three different resistance levels (Green 30 lb, Blue 40 lb, Orange 50 lb) to strengthen your hands. Grip strength escalation will help gradually increase the difficulty of training your wrists and forearms. Ideal for musicians such as guitarists, violinists, rock climbers, tennis players, bodybuilders, golfers, etc.Material: The grip strength enhancer is made of high-quality, odorless, and latex-free silicone material, which feels comfortable during hand exercise training. The anti-slip rings are also tear- and crack-resistant for long-term use. .Multiple Exercise Methods: Gripping hand trainers can be used for various activities, including squeezing, pinching, and stretching. It only takes 2-3 minutes to fully train the strength and flexibility of your fingers or forearms.Portable: The outer diameter of the grip strength enhancer is 7 cm/2.8 inches and the individual weight is 50 g/1.8 ounces, easy to carry and fits perfectly in your gym bag or purse. You can incorporate repetitions while commuting, at the office, or anywhere else!