Silicone Fingers Hand Grip Strengthener Finger Exerciser Grip Strength Trainer Hand Resistance Band Hand Extensor Exerciser Injury Rehabilitation.Material: Silicone.Features: It can exercise your fingers to make your fingers flexible and is beneficial to your body and mind health. Force value: lage force: 5KG/11B;Size: (approx.) Widest: 10 cm/3.94", height: 8 cm/3.15", thickness: 0.8 cm/0.31" ;Color :Dark Green 5KG/11LB ,Black 5KG/11LB Package Include:1pc Silicone Finger Gripper Resistance Bands Note:1. Some pics look like larger size,please notice the exact items size. Please allow 1-3cm (0.4-1.18") difference due to manual measurement and check the measurements to choose the right size 2. Please keep in mind that due to lighting effects, the monitor's brightness and contrast settings, the color of the products could be some slight different between our photos and the actual item you receive.