Made of polyester and elastane (Lycra), this under-helmet protects you from the wind and cold; offers coverage of chest, neck, mouth, leaving the eyes uncovered. It also covers the nose, although you will find a mesh over it, for better breathability and to prevent the glasses from fogging up. This model fits close to your head thanks to elastic bands at the back of the head that will adjust to your size and will also cover the nape of your neck