The Scrum cap is a form of headgear used by rugby players to protect the ears in the scrum, which can otherwise suffer injuries leading to the condition commonly known as cauliflower ears. Although originally designed for forwards they are now worn by players of all positions, even those who don't play in the scrum. A prominent back to wear a scrum cap is Leigh Halfpenny who removes his to kick for goal.
A simpler alternative to a cap, or a head-cap and used by many players, is a thin strip of foam or cloth and electrical tape wrapped around the ears like a head band.
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Construction
The scrum cap was first used by the Christ's College Finchley's 1st XV, and Eurig Evans is credited with its design. The traditional scrum cap was constructed of a thin cloth helmet with padding over the ears, held in place by a strap--but modern models are typically made from thin foam.
The headgear is strictly defined by Regulation 12 of the IRB as being made of soft, thin materials. Stiff materials, such as plastics, are expressly forbidden, and buckles are not permitted. Regulation 12[2] also gives details regarding the testing standards for this headgear. All headgear to be worn in rugby union must carry an IRB approval logo.
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Concussive protection
Since the early 1990s, other players have taken to wearing padded headgear. This is intended to protect from cuts and head injuries that can occur from incidental contact in tackles or at rucks. Whilst they may prevent some cuts and abrasions, such headgear has not been shown to reduce concussive injury.
Source of the article : Wikipedia
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