Maximum safety, perfect thermal protection, a flawless look. The BLIVET KOLL helmet, the only winter cycling helmet. Certified CPSC, lightweight construction, robust, made of quality materials and unique design, the KOLL is specifically intended for winter use. It is a helmet without openings to keep your head warm and is equipped with a retractable lens (and replaceable) to protect the face. Very comfortable, designed with an excellent adjustable micro stabilization system, it is also equipped with a system of adjustments to the neck with three positions for better comfort and stability. The KOLL is offered with two lenses, transparent, and mirror, perforated specifically multiple times that allow the movement of air and stops frost formation, maximizes visibility and protects your face and eyes from cold winds. A single universal size, covering 54 to 60cm of head circumference and which allows to wear a thin cap. Characteristics: Molded type construction Micro plastic outer layer and polystyrene internal structure Comfortable, flexible and easy to adjust straps Two lenses included, transparent and mirror Weight: 353g