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 facial 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.