When you break it down, a cycling helmet is actually a pretty simple affair. Behind the acronyms and camel-case, proprietary technologies are three basic elements: a polycarbonate shell, an EPS foam body, and an adjustable retention system. The Giro Trinity Helmet incorporates all three, with the addition of a holey, ventilated design, making it the Alpha of cycling helmets. Omega can keep its acronyms. The shell and EPS body are fused via Giro’s application of In-Mold technology. This makes for better impact-absorption and more structural integrity, while the addition of rear-oriented reflective elements may keep you from needing to rely on those properties. In the event of a tumble, the Acu Dial fit system means your helmet will be held securely in place to provide the highest level of protection possible.