From Openwaterpedia
Australian bioprener John van Wisse added kilograms of bioprene for his 3-way swim attempt of the English Channel

noun - A bioprener is an open water swimmer who swims and trains without a wetsuit, any form of neoprene, and can generally withstand relatively cold water temperatures in the open water.


Bioprene is an alternative term for the layer of hypodermis on the human body, also called subcutaneous tissue. It is mainly used for fat storage and a natural means to help tolerate cold water by open water swimmers.


  • bio + neoprene or polychloroprene, a synthetic rubber that is used for wetsuits.
  • Neoprene is the DuPont trade name for its brand of polychloroprene.
  • The term was first coined by Steven Munatones in 2011.

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