Muscletrac Sport 4 Trac Roller Made in the USA, Invented by Sports Medicine Physician Dr. David Fitzmaurice Features the Trac Technology-provides fast and effective self myofascial release for trigger points Features 1 Trac with an ergonomically designed handle and a weighted inner rod which allows users to vary from a light to deep tissue massage 15.5" in length-convenient size to carry in your bag to use before or after training Easy to use for self myofascial release of the arms, legs, neck and the entire body with partner application