Firm, closed cell foam provides a deeper massage than our Closed-Cell Foam roller, while feeling soft on the skin. Stimulates blood flow and improves circulation to the body's soft tissues. Lengthen and loosen tight muscles or use the half-round versions to improve balance and core strength. Specially designed for frequent use, resistant to moisture and bacteria, and lasts up to five times longer than an open-celled foam roller. Clean with a damp cloth. This round foam roller measures 36 inches long and has a 6-inch diameter.