The Petzl Elios Helmet provides an excellent combination of lightweight and durability for all types of climbing. The polycarbonate shell and impact-absorbing form liner make this a great choice when you need a helmet that lasts but don't want to feel like you strapped a brick to your head. This well-ventilated helmet has clips for a headlamp and can be used for everything from sport to alpine climbing. Adjust the Elios to fit over a stocking hat with a single wheel in the back.