Designed to fit into the ear and without catching the helmet liner, Crescendo Moto is a discrete reusable, universal fit hearing protector for helmet-generated noise, reducing it to safe levels yet still allowing speech to be heard from intercom speakers. While other hearing protection can sound muffled and unnatural, the Crescendo Moto provides full frequency noise reduction. The advanced filter design from DEC provides an openair passage to the ear, minimizing occlusion effect while keeping the ear ventilated for optimum comfort.