RISE ABOVE. With cutting-edge design & maximum ventilation Rev is one of the official helmets of Team Giant-Sunweb. From hors categorie climbs to World Cup cyclocross racing it’s the ultimate choice for superior fit comfort & protection. &128077; Protected for 12 months by Giants Helmet Crash Replacement Service &128077; Features Air Flow 21-vent cooling system is enhanced by a large center vent pulling air through the helmet & over the rider’s head to keep him cool 5 polycarbonate micro-shells for an aggressive on-road design Sub-foam embedded polycarbonate Internal Structural Shell (ISS) provides internal strength & support to the EPS at minimal weight penalty Lightweight comfortable Lite Form™ webbing wraps around the head for a secure & comfortable fit. It’s also hydrophobic so it won’t absorb sweat or stretch out like other webbing Locking cam buckles keep the Lite Form™ webbing anchored securely Trans Textura Plus™ anti-microbial padding helps fight bacteria growth by pulling sweat from a rider’s head & transferring it through the Air Flow vents; the natural property of the fabric inhibits microbes that cause odors Cinch Pro™ fit system offers optimal coverage by cradling the occipital bone for full protection support & comfort Extra 3mm Trans Textura Plus™ padding kit included with helmet MIPS Brain Protection System &128077; Protected for 12 months by Giants Helmet Crash Replacement Service &128077; Specifications Western: S (51-55cm) M (55-59cm) L (59-63cm) Weight: 280g (size M)