The traditional foam roller is intended for myofascial release. However, due to its flat surface, it can actually further compress muscle tissue and increase tightness, rather than alleviate it. The Rumble Roller is studded with stiff protrusions which act like a masseur'sfingers, reaching into muscle tissue and releasing trigger points.

While the bumps are stiffer than foam they are softer than bone, so they deflect out of the way if they come into contact with the spine, hip, or other parts of the skeleton. The Rumble Roller boasts another quality which puts it further beyond its traditional counterpart. By moving side to side, the bumps are even stiffer, thereby providng an extra dimension - and intensity - to your stretching program.

The Rumble Roller comes in two sizes. The larger model is wide enough so that it will cover the whole of your back in one pass, while the compact model is more portable; ideal for those who need it when travelling to sporting events. There are essentially two grades; blue, which is more of an entry level device, and the black roller, which is 36% firmer.