Rockets reusable earplugs are designed to give you a great grip. The easy grip handle lets them easily slip into the ear. Rockets features an air bubble in the tip providing cushioned comfort and a triple flange design that provides maximum comfort for all day wear. The soft flexible flanges provide a superior seal and fit most ear canals. Rockets earplugs can be washed and reused. Each pair comes with a Pocket-Pak carrying case to keep them clean when not in use. The smooth shape slides easily into your pocket. All Moldex hearing protection is independently tested to ANSI S3.19-1974 by Michael & Associates, Inc., State College, PA