How To Use Finger Exerciser?Tip 1: Place loops over each finger, starting with fingertips close together.Tip 2: Slowly spread the fingers apart, hold for 3 seconds, then relax them slowly. 1 to 30 repetitions in three sets.Hand Band Resistance LevelGREEN: Light Resistance - For Beginners and Injured Hands. - BLUE: Medium Resistance - For Everyday Strengthening Exercise. - ORANGE: Hard Resistance - For Advanced Muscle Toning.Light blue is 6.6 lbs /3kgAcid blue is 8.8lbs /4kgDark blue is 11lbs /5kgEmerald green is 6.6lbs /3kgRoyal blue is 8.8lbs /4kgOrange is 11lbs /5kgSUPERIOR-QUALITY DESIGN FOR MAXIMUM PERFORMANCE SAFE AND DURABLE Made of top-quality Silicone, not easy to tear. It is WASHABLE and can be use frequently and comfortably.FITNESS & SPORT ENTHUSIASTS Strengthen your wrists, improve the dexterity of your fingers and increase the strength your hands can apply while reducing fatigue. Its rally value is from 30 to 50 lb. Help balance your grip muscles and your expanding muscles.REHABILITATION & PREVENTION:Great for rheumatoid arthritis, arthritis, carpal tunnel, tendonitis, tennis elbow and are on the way to recover from a fractured or broken wrist, or when you type, text or any other activities which use your gripping muscles.ERGONOMIC DESIGN FOR ALL HANDS:Suitable for all age groups and fits well for all hand sizes, different from other "small finger holes bands" on the market. Portable and easy to fit in bag or pocket. You can get repetitions in while driving, at the office or anywhereWARM TIPS:Please note that there may be some chromatic aberration due to uncontrollable reasons such as light and display.