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The Foil Monofin is a single bladed fin from Finis which helps to strengthen your lower and core body muscle groups. Using a monofin can also help to develop your butterfly leg kick.
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[ Ссылка ]
The Foil Monofin is a single bladed fin from Finis which helps to strengthen your lower and core body muscle groups. Using a monofin can also help to develop your butterfly leg kick.