The Sport-Thieme "Spin" hand trainer – great for strengthening arm muscles
The Sport-Thieme "Spin" hand trainer does not require any batteries. The inner rubber ball is set in motion through the cord inside it. Gyroscopic force then ensures that the ball can be kept in motion through pure muscle power. This gyroscopic hand trainer adapts to the performance level of its user: the faster you spin the trainer, the more intense the workout. This means that you can gradually increase the training intensity to suit your needs.
- Material: plastic shell, rubber ball
- Diameter: 7.5 cm
- Weight: 250 g
- Colour: blue/red