Suitable for everyone: The device is suitable for everyone, both children, teenagers and adults, and is ideal for athletes and musicians. By squeezing and stretching, the finger exerciser builds strength in fingers, hands, wrists and forearms and improves finger flexibility. Safe and reliable material: Made of high quality silicone, which is soft and comfortable, durable and safe.< br /> Ergonomic design: The finger trainer is ergonomically designed and feels comfortable to hold and use. Comes in 3-pack with 3 different resistances, 3kg, 4kg and 5kg. Note: The new version and the old version will be sent randomly. Specifications: Color: Light Blue/Dark Blue/Royal Blue Size: 8x3.5x1.8 cm Material: Silicone Resistance: 3 kg (light blue), 4 kg (dark blue), 5 kg (royal blue ) Package includes: 3 x finger trainer