Review: Giro’s New Manifest Helmet

The Manifest is Giro’s newest mountain bike helmet, with an extensive list of features that put it in the top tier of their trail-oriented offerings.

Along with a light weight and generous ventilation, the helmet has Giro’s Spherical technology, which uses two separate layers of foam connected by elastomers that allow the two layers to move independently. The idea is that during a crash the outer layer is able to rotate enough to help dissipate a portion of the impact force, reducing the amount of stress that reaches the brain. It’s a similar design to what’s used in the Tyrant helmet, but in a much airier package.

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