Description: 【Double Resistance Levels】: This grip strength trainer offers double resistance options of 20LB and 30LB, allowing you to customize your workout intensity for optimal hand and forearm strengthening 【Sturdy Silicone Material】: Made from quality silicone, this hand gripper is designed to withstand repeated use while providing a comfortable grip, making it ideal for long term training sessions 【Enhance Grip Strength】: Great for rock climbers, athletes, or anyone looking to improve their grip strength and dexterity. It's an great tool for enhancing finger flexibility and overall hand endurance 【Compact and Portable Design】: Its lightweight and compact design make it easy to carry in your gym bag or keep at your desk, ensuring you can train anywhere, whether at home, the office, or on the go 【Ideal for Workout】: This grip ring is not only great for fitness enthusiasts but also serves as an effective workout tool for those recovering from hand injuries or surgeries by gradually rebuilding strength Specification: Material: Silicone Size Chart: 7.2cmx7.2cm/2.83inchx2.83inch Package Includes: 1 Grip Strength Trainer Note: Please allow slightly errors 1-2cm differences due to manual measurement.