“What material is the strap made of? What are the wavey friction lines made of?”

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• Rubber

  Answered by DanONJ 7 years ago

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• It's made of a type of elastic material and the friction lines seem like sort of dried glue material... honestly it reminds me of a girls head band... it works well and is comfortable

  Answered by Pgway 9 years ago

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• Plastic and metal

  Answered by MatiasRo 9 years ago

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