Giro Source Mips Helmet - combines advanced performance and protection in a durable, trail-ready design. Deep coverage with aggressive ventilation from 17 vents paired with a deep internal channel helps keep things cool even when the ride is noisy. This Giro bike helmet features a Roc Loc™ 5 Mips fit system with integrated Mips brain protection, an adjustable moto-style screw-on visor and full Hardbody bottom protection. * certification: EN-1078 * IN-MOLD® all-polycarbonate shell with EPS insert - the system is a technological procedure in which EPS polystyrene foam is injected under pressure into the shell and stiffeners closed in the mold. Their connection will reinforce the area of ventilation holes and ribs. The result is a compact, one-piece, light, safe and very durable helmet * MIPS (Impact Protection System Multi-directional) technology: MIPS inner liner with elastomers, upon impact there is a slight movement of the shell, which reduces rotational forces and softens the impact * padding IONIC+™: permanent antimicrobial insole * fit: Super Fit Engineering * adjustable MOTO-style screw-on visor * clamping system: AIR ROC LOC 5 - allows you to easily adjust the helmet's customized tension and tilt forward and backward in seconds with one hand. And it is also lighter than comparable systems * Coolfit ™ padding - antibacterial treatment * 17 ventilation holes, in a wind tunnel with an internal channel * circumference in size M (55-59 cm), L ( 59-63 cm) * weight in size: M 351 g * Giro helmet * Giro cycling helmet * MTB bicycle helmet * Giro branded helmet