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ski helmet
A ski helmet is a helmet specifically designed and constructed for winter sports. Use was rare until about 2000, but by about 2010 the great majority of skiers and snowboarders in the US and Europe wear helmets.〔 Helmets are available in many styles, and typically consist of a hard plastic/resin shell with inner padding. Modern ski helmets may include many additional features such as vents, earmuffs, headphones, goggle mounts, and camera mounts.
==Risks==
In terms of injuries per 1,000 skier or snowboarder days, Switzerland reports around 3.5, Norway 1.5, Vermont USA 1.9, and Canada 2.5. The death rate in the US is about one per million visits. of which more than half are related to head injuries.〔
Studies from Switzerland, Germany, Austria, Norway and Canada show that the proportion of head injuries is estimated at 15% for ski injuries and 16% for snowboard injuries.〔 74% of head injuries occur when skiers hit their head on the snow, 10% when they collided with other skiers, and 13% when they collided with fixed objects.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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