Patching and repairs can extend the life of a wetsuit but inevitably they wear out. With mountains of worn wetsuits building up there is increasing interest in making use of them. Suga turns old wetsuits into yoga mats. Finisterre is dabbling with developing recyclable wetsuits. When a wetsuit becomes unfit for purpose its constituent material can still be useful. DIY and make use of their insulating properties as koozies— insulating sleeves for holding drinks— or post swim changing mats, check how slippery the finish on the surface is before trusting standing on it. If you don’t swim in a wetsuit but would like to make use of neoprene check if local coasteering or outdoor water sports centres have worn out wetsuits they are getting rid of.