MET Stradivarius HES Road Bicycle Helmet. Gerald Ciolek appreciates how easily you can forget you're wearing a MET Stradivarius HES Bicycle Helmet, even during iconic races such as the Milan San Remo which he won in 2013 in absolutely hellish weather conditions. He certainly won't be disappointed with this updated Stradivarius HES version as MET made their top of the line performer even lighter and more comfortable. Its Homothetic Embedded Skeleton HES construction process involves fusing two homothetic shells, allowing the pressure that builds up at the point of impact to be spread across the Bicycle Helmet for more effective shock dissipation. Full Gel O2 padding feels super comfortable on the hottest rides and helps keep the Bicycle Helmet perfectly in position. The Air Lite straps and dividers shave grams while remaining strong, aerodynamic, and moisture wicking. Additionally, the Safe T Advanced retention system easily adjusts via a dial plus goes around the whole circumference of the head for better shock absorption and dissipation.