Giro: A NEW ICON RISES Cooler, lighter, faster – pick three. The all-new Aries™ Spherical is our most premium helmet ever. Teh Aries smaller form and lighter weight (only 265 grams in size medium, CE certification), delivers sensational comfort and cooling power. Spherical Technology™, the ball-and-socket design powered by Mips® adds protection by redirecting energy away from the brain in certain impacts, and Progressive Layering with dual densities of Nanobead EPS foam adds more comprehensive energy management. 24 Wind Tunnel vents are maximized by the AURA Reinforcement Arch, while plush Ionic+ anti-microbial padding and a network of intricately engineered deep internal channeling elevate comfort. From the proven reliability and adjustability of the Roc Loc® 5+ Air fit system, to full lower hardbody coverage to enhance durability, to the meticulous production quality, the Aries is the epitome of top-shelf performance, protection, and style.SPECSSpherical Technology™Mips® Brain Protection SystemProgressive LayeringNanobead EPS foamAURA Reinforcement ArchIn-mold construction24 vents and deep internal channelingFull lower hardbody coverageIonic+™ anti-microbial padding CONSTRUCTIONIn-mold constructionFull lower hardbody coverageFIT SYSTEMRoc Loc® 5+ AirVENTILATION24 vents and deep internal channelingSUPER FIT™ SIZESS 20”–21.75” / 51–55cmM 21.75”–23.25” / 55–59cmL 23.25”–24.75” / 59–63cmWEIGHT275 grams (size M, CPSC)265 grams (size M, CE)