Feature:1. Enhance hand force, finger force, five fingers repeatedly hold the ring, promote the stimulation of the hand acupoints.2. Hand training is non-slip, can enhance grip strength and forearm strength, promote hand blood circulation.3. Can be used for rehabilitation after injury, to restore strength for the arm.4. Made of quality silicone material, soft and odorless, non-toxic and harmless, durable for use.5. Light weight and in small size, you can exercise hand and finger strength at anytime and anywhere.Specification:Condition: 100% Brand NewItem Type: Hand Exercise ToolMaterial: SiliconeOptional Color: Light Green, Grass Green, Dark GreenSize: Hand Shaped Finger Stretcher: Approx. 9.5 x 7.5 x 0.8cm / 3.7 x 3 x 0.3in, Gear Shaped Hand Training Ring: Approx. 7 x 7 x 1.8cm / 2.8 x 2.8 x 0.7inInstructions for Use: Different colors represent different power requirements Package List:1 x Hand Shaped Finger Stretcher1 x Gear Shaped Hand Training RingNote:1. Please allow 1-2mm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.