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Does a life jacket keep a person afloat even if he/she is in an eddy? Let's say that person is just keeping still in an eddy, does he/she stay afloat with a

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What were life jackets made of before the invention of plastic? - Quora

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What is the best life jacket? - Quora

What were life jackets made of before the invention of plastic? - Quora

What were life jackets made of before the invention of plastic? - Quora