Billabong B9 Ultimate Platinum 4/3 Full Wetsuit 2010: Just when you get used to winter surfing in frigid cold weather things start to warm up, but not enough to bring out your shorty. Grab the Billabong B9 Ultimate Platinum 4/3 Full Wetsuit and you’ll be good for the later winter/early spring surfing. This suit has you covered with a double neck lining, full knee pads and Ergonomic Performance Paneling.