The BLACKROLL TWISTER does not only work with applying body weight to it but also allows the combination of pressure and twisting. The result: circulation rises, trigger bands and points are stimulated and the fascial tissue becomes well hydrated. The BLACKROLL TWISTER has a studded surface and ergonomic curve to enhance targeted stimulation. For professional and at-home use. Ideal to use on shoulders, forearms, and more. The BLACKROLL TWISTER is environmentally friendly as it is made using an energy-saving production process and it is free of propellants and chemicals. This German-made product is easy-to-clean, water resistant and odorless.