Package Include2 packs Black/Green hand grip strengthener,the dimension of the grip exerciser is 13.5cm * 8.6cm(H * W). Sturdy & DurableMade of high quality steel spring and aluminum handle. Ergonomically designed.Double-layer thickened sponge,easy to absorb sweat and anti-skid, can better control the grip strengthener. Lightweight & Portable The compact design makes it easy to put the hand exerciser in your pocket or backpack, allowing you to exercise your hands anytime and anywhere. Such as office, at home, outdoor walking and travel, etc., easy to carry. Injury RehabilitationDaily hand exercises with a grip exerciser can help recover in hand injury. Such as arthritis, carpal tunnel syndrome, tendonitis, rheumatoid arthritis. Wide Range Of ApplicationsThis grip strength trainer fit for all male and female hand shapes, can be used to exercise the strength of wrists, forearms and fingers, improving the flexibility of fingers and wrists. It is an ideal choice for various sportsenthusiasts, drummers, guitarists, pianists, etc. Colour Name:BlackGreen