Features: This finger trainer improves your grip, lift hand muscles, and promotes joint mobility for better accuracy and control. Make from Silicone, our grip strength trainer web stays flexible, not succumbing to tears, breaks, or deformations with use. Increase hand strength progressively with this grip training web, suitable for workouts in the living room, workplace, gym, or while traveling. Designed with a compacts and light weight build, this exerciser can used anywheres and is easy to carry. With this Hand Exercise Web, you can train your finger muscles and improve grip strength. Specifications: Component: Silicone Color: Yellow/Red Color/Green Diameter: about 17.5cm/6.89inch Yellow Resistance: 5-8kg Red Resistance: 8-12kg Green Resistance: 12-17kg Package Includes: 1Pc Power Training Net note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.