City of Sydney's ultimate guide to recycling and disposing of stuff.
Donate to Rip Curl or Patagonia Stores
You can donate unwanted wetsuits to Rip Curl or Patagonia stores. They will recycle them into other neoprene products such as inner soles for shoes or even thongs.
Or you could ...
Donate to a charity
Charities will accept items in good condition you don’t want or need anymore. Put them in your local Collection Bin or give them over the counter. Some charities offer a pick-up service – visit Smith Family, Salvos, Vinnies for more info.