* 100% Made in Germany BLACKROLL GROOVE PRO FOAM ROLLER Structured surface for new stimuli 50% harder than the BLACKROLL STANDARD For intensive applications Stronger massage effect The BLACKROLL GROOVE PRO has the high density level of the BLACKROLL PRO. During fast rolling, the grooves on the surface cause a slight vibration effect, supporting blood circulation of the tissues during activation before exercise and stimulating the receptors in the connective tissues and muscles. The BLACKROLL GROOVE PRO is particularly useful in performance sports. For fascia pros Warning: the roller is very hard, so it is recommended only for prosecutor and advanced rollers. https://shopblackrollcom/collections/foam-rol... Video : https://www•youtube•com/channel/UCOYq__TmZJ1bnI...