With the Aliens Rollerball Forearm Trainer, you get a compact but incredibly effective training device to specifically strengthen your forearm muscles and improve your grip strength. The handy rollerball trainer is about the size of a tennis ball and fits perfectly in your hand. Inside, a flywheel weighing around 200 g provides plenty of power: circular movements cause it to rotate and generate strong centrifugal forces that provide noticeable training resistance. The faster you spin the ball, the more intense your wrist training becomes – at up to 16,000 revolutions per minute, the resistance load is around 15 kg!

The result: you specifically train your forearms, strengthen your wrists, and improve your coordination and endurance. Whether you are a climber and need more grip strength, a tennis player who wants to stabilize your wrist, or a musician who wants to improve your dexterity, the Aliens forearm trainer helps you take your performance to the next level.

As soon as the rollerball starts to “hum,” you know it's running at full speed—and your training is working! The compact design makes the forearm trainer the ideal companion for on the go. You can use it anywhere—for warming up, as a supplement to strength training, or for recovery after long days at work.

Information on EU Regulation GPSR 

Name of the manufacturer: Aliens Bergsport & Arbeitssicherheit e.K Andreas Hofmann
Postal address of the manufacturer:  Georg-Hardt-Straße 7, 83624 Otterfing, DE
Electronic address of the manufacturer: info@aliens-outdoor.de