Hockey helmet

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A hockey helmet is worn by ice hockey players and field hockey goalkeepers to protect the head from potential injury.

Hockey helmets comfortably grip the head from inside by cupping the back of head, or the occipital protuberance. Helmet manufacturers will have a chart that corresponds their helmet sizes to head measurements. To find the proper size for you, measure the circumference of your head about 2.5cm or 1 inch above your eyebrows.

Most helmets have "tool-free" adjustments but on older models the helmet size is adjusted by loosening the screws on the side to slide the front portion forward or back. A hockey helmet should fit snugly to prevent any shifting and maximize protection. There should be no rotation of the helmet and nor should it be so loose that the shell slides down covering the player's field of vision.

The shell of a hockey helmet is made of a substance called vinyl nitrile that disperses force and absorbs the impact of hits by pucks, sticks, skates or contact with the ice, to reduce the chances of concussion.

Often, it is worn with a visor, which in some leagues --particularly for younger players-- is mandatory.

Fun fact: If the shell of the helmet is painted or has stickers added the certification may be invalidated.