Kask Valegro Helmet Pro Level Ventilation Kask took to the wind tunnel when designing the Valegro, with the purpose of optimizing airflow to keep you cool on even the hottest days. The result is one of the most ventilated, lightweight pro-level road helmets available, coming in at a feathery 180 grams (size small). The Valegro is light enough for everyone, from for the recreational rider to the pro peloton and is trusted by the INEOS Grenadiers world tour pro team. It has a highly-adjustable Octo Fit retention system, with 180 degrees of adjustment to comfortably fit most head shapes, providing a secure, pressure-free fit for those long days in the saddle. The incredibly comfortable, hypoallergenic synthetic Eco-Leather chinstrap virtually eliminates skin irritation. So cool and comfortable, you may forget you're even wearing a helmet at all. Features37 cooling vents to increase airflow Lightweightonly 180 grams (size small)Removable forehead pad for increased airflow Super soft synthetic "eco-leather"chin strap Resistex Carbonpadding is soft and highly evaporative Octo Fit retention system with 180 degrees of adjustment MIT(TM)polycarbonate shell for added safety SPECIFICATIONSCore Material-Closure system-Safety Certifications CE EN 1078, CPSC 1203, AS/NZS 2063Intended Use Road Weight180 grams (size small)Sizing Size Small Medium Large Head Circumference (in)19-11/16" - 22-3/64"20-15/32" - 22-53/64"23-15/64" - 24-13/32"Head Circumference (cm)50cm - 56cm52cm - 58cm59cm - 62cm | Kask | Valegro Helmet Men's | Size Medium In Matte Black