Giro: THE POWER OF COOL The Merit™ Spherical is a high-performance trail riding helmet built around the ball-and-socket design of Spherical Technology™ to provide amazing ventilation, deep coverage and luxurious comfort.Helmets with Spherical Technology offer more comprehensive performance and protection with the combination of a Mips® brain protection system to redirect rotational impact energy. Plus separate inner and outer liners featuring Progressive Layering™ help manage high and low-speed impacts.The massive Wind Tunnel vents are combined with channels in the EPS foam liner, creating amazing airflow through the helmet to exhaust heat out, even on long, hot climbs.Fit and stability adjustments are fast and easy with the Roc Loc® Trail Air fit system, and plush Ionic+™ padding provides exceptional sweat absorption while combating odor with permanent anti-microbial performance. With all of these features, it’s an ideal choice for fast, flowy trail riding and hard pedaling. SPECSSpherical Technology™Mips® brain protection systemProgressive Layering™Adjustable moto-style screw-in visorGoggle gripperIntegrated eyewear grippersIonic+™ anti-microbial paddingLightweight webbingCONSTRUCTIONIn-Mold polycarbonate shell with EPS linerFull lower hardbody coverageFIT SYSTEMRoc Loc® Trail AirVENTILATION15 Wind Tunnel™ vents with internal channelingSUPER FIT™ SIZESS 20”–21.75” / 51–55cmM 21.75”–23.25” / 55–59cmL 23.25”–24.75” / 59–63cm