Size: Diameter 70mm, Height 18mm Color: Green+Blue+Orange Specifications: 30 pounds, 40 pounds, 50 pounds Material: Silicone Package content: 3 x grip rings 1. Strengthens grip and improves dexterity: This hand trainer strengthens fingers, hands, wrists, and forearms. The hand gripper can be used for squeezing, pinching, and stretching exercises to enhance finger and hand dexterity. 2. Three resistance levels: Includes 3 hand trainers with varying resistance levels (30, 40, 50 lbs) to progressively build strength in hands, wrists, and forearms. Ideal for musicians, climbers, tennis players, golfers, bodybuilders, and others requiring grip strength. 3. Ergonomic design: Designed to fit comfortably in adult hands. The size is suitable for both men and women for effective grip training. 4. Durable and non-slip: Made from high-quality, odorless, latex-free silicone. Lightweight and built to last with tear-resistant, non-slip surfaces for reliable performance during extended use. 5. Portable design: Compact and easy to carry, fits neatly in a sports bag, purse, or desk drawer. Ideal for use at home, in the office, while traveling, or on the go.