Black Diamond Vapor Helmet Synthetic Lightweight co-molded EPS foam with polycarbonate shell is lower profile than the Vector without compromising functionality. Kevlar sheet and a series of carbon rods between the EPS foam and outer shell provide maximum protection. Geometric, open-air design offers unparalleled airflow to keep you cool and comfortable. Ratchet adjuster with molded push buttons makes it easy to get just the right fit; tucks into the helmet for compact storage in your pack or haul bag. Headlamp attachment clips can be removed to avoid getting caught on clothing or slings.