Wetsuited and Buoyant
noun - Wetsuited and Buoyant is the wetsuit category for solo swimmers and relays at the Cold Half 15 km extreme winter marathon swim in Hong Kong Island on February 23rd 2013. The category allows use of wetsuits and neoprene in the event. There is a non=wetsuit category that is called Naturally Ocean.
The channel swimmer was not confident of his abilities to swim in cold water, so he elected to swim in the Wetsuited and Buoyant category at the Cold Half.