![]() That added strength allowed Giro to create larger vents for better cooling while still passing necessary safety tests, said Dain Zaffke, Giro’s marketing director.Ī harder question to answer is whether Spherical tech is demonstrably “safer” than traditional MIPS? It’s difficult to test (not a lot of humans are lining up to have their brains monitored during simulated crashes), and just as hard for brands like Giro to answer without getting in legal hot water. The Manifest’s outer shell employs a polyamide reinforcing ring, which improves the helmet’s structural integrity in an impact, Giro says. The inner shell employs a lower density foam that protects better in lower-speed impacts. The outer shell is a higher density foam, which performs better (than lower-density foam) in high-speed impacts. This gets rid of the plastic liner, which can snag your hair and squeak annoyingly, and allows Giro to use a different foam density for each shell. The concept is the same as a MIPS liner-a slip plane redirects energy in some impacts to reduce impact forces-but the slip plane no longer sits inside the helmet against your head. It replaces the familiar plastic MIPS liner inside the helmet with a design consisting of two nested and linked shells-Giro calls it “ball-and-socket”-that can move independently. New Levels of Comfort, Cooling, and (Maybe?) Protectionĭespite the clunky name, the Spherical technology is very good. Previously Giro called this technology MIPS Spherical, but for reasons that probably involves some lawyers debating intellectual property, the company calls the Manifest’s system “Spherical Technology, powered by MIPS.” This system debuted with the Aether road helmet and later came in the Tyrant enduro helmet. The Manifest employs Giro’s twin-shell energy-redirection system. A polyamide reinforcing ring improves structural integrity in a crash.
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