Stuffitts For Helmets is a form-fitted, reusable cedar insert that combats damaging moisture and kills odor in helmets caused by perspiration and outdoor elements. The Stuffitts For Helmets single-sized insert is easy to push into the helmet and fits snug inside, even when stored in the upright position. Stuffitts offers two styles of inserts depending on helmet type — full-cut for helmets that covers ears and half-cut for helmets that do not cover ears. The inserts are available in colors red and black.