Details Petzl Sirocco Climbing Helmet One of the best climbing helmets on the market, the Petzl Sirocco is incredibly lightweight thanks to the use of expanded polypropylene foam for the body of the helmet, with a more rigid crown piece in injected expanded polystyrene. The EPS extends further down the back and sides for better protection from the kind of impacts you're likely to get while actually falling, whilst the EPS crown protects from rock fall. Excellent ventilation too. Webbing attachment straps are light, simple and comfortable, and the chin buckle is magnetic to make it super-easy to fasten. Weight: 170g (size M/L) Ultra-light climbing helmet Hybrid construction with a shell in EPP (expanded polypropylene) foam and rigid crown injected with EPS (expanded polystyrene) foam Head-covering design for optimal protection against lateral and rear impact Maximum comfort in action: Wide holes, for excellent ventilation Completely adjustable, thanks to the adjustable headband and chinstrap Magnetic buckle facilitates fastening the chinstrap (Petzl patent) Compatible with the VIZION eye shield Two hooks and rear elastic for attaching a headlamp Materials: expanded polypropylene (EPP) shell, polycarbonate crown, expanded polystyrene (EPS) liner, polyester webbing Certifications: CE EN 12492, UIAA Product comes with protective storage bag and spare foam Specifications Sirocco Climbing Helmet