Avoiding injury is a process requiring diligence. Addaday is a brand of products designed to help with the myofacial release of tight muscles. Massage is sometimes needed to improve circulation and muscle function, and can benefit runners, whether they experience chronic injury or not. The Type C roller is designed primarily for the lower leg, and features a variety of shapes that knead the muscle and are spaced to allow blood flow and effective stimulation of the tissues involved. The “gears” are coated with a rubbery surface that cushions the element to prevent too much pressure, while still allowing the massaging effect. Other models focus on ancillary benefits, and their website: addaday.com has more product information, as well as educational resources.