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Quantum Signet-larity: Arai’s Round Oval & Long Oval Head Shapes Compared | CityBike Magazine
It’s clear from the git-go that these are very nice lids—the diamond white paint is subtly gorgeous. Venting is extensive, with an intake under the shield, two in the shield, and two above the eyeport, and six exhausts in the rear. The airflow provided is exceptional. Fish called it fantastic: “I’ve never worn a helmet that flowed air in such an effective yet unobtrusive way.”