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krovek42 t1_j9p541k wrote on February 23, 2023 at 4:06 PM

Reply to comment by Mental_Cut8290 in ELI5: Why do people wear different types of helmets when skiing and bicycling? by LucasUnited

Plus ski helmets with airflow vents usually have a way to close them with a little sliding switch, so you can get more airflow on a warm day but cut it off on a colder day.