Wetsuit Wear Test: Billabong Furnace Range If only every focus group could feel like a good surf sesh… Photo: Chris Burkard Link copied to clipboard We can talk certified sourced rubbers, CICLO fibers and “improved foams,” all damn day. We could show you provocative images of pro surfers doing air reverses over icebergs with a glacier in the background to prove how toasty the latest hooded 5/4mm will keep ya…but we did that already. When it comes down to it, as far as the latest wetsuit tech goes, if you’re talking endgame: We just want to be surfing longer in one. And we want warmth and flexibility. And, without sacrificing a bit of our soul (we’ll get to that in a sec).