With the BLACKROLL® BOOSTER, any BLACKROLL® foam roller with the normal 30 cm length can be converted into an even more effective massager. The vibrating core insert supports the effect of the classical roller on multiple levels. The oscillating vibration of the revolutionary VIBRA MOTION technology helps ameliorate pain. The vibration confuses the pain receptors in the tissue, so that a point stress is perceived as significantly less painful. The muscles are also set into oscillating motion by the vibration, stimulating blood circulation and optimizing recovery. The BLACKROLL® BOOSTER has an extremely broad, precision-controllable spectrum of vibration, and is very easy to operate with two buttons.