The roller ball is durable and easy to use and can also be used wet or dry. The roller ball can be used anytime at home to help relieve stress and tension and is also suitable for professional use too. The durable roller ball works by providing a very effective massaging technique and has an omni-directional ball that spreads pressure, which helps to relieve stress and tension to leave you feeling relaxed. The roller ball is easy and comfortable to use and helps to reduce stress on your fingers, hands and elbows. The roller ball can be used hot or cold as well as dry or with a range of massage oils.