When the waves are good but the temps are dropping, you need coverage that won't inhibit your movement. The Billabong 4/3 Furnace Synergy Chest-Zip Full Wetsuit will keep you on the water for longer by insulating you against the cold. It features AX2 Superflex--a kind of neoprene that insulates and stretches without sacrificing durability. Furnace lining creates small pockets of air that further insulate your body while sitting softly against your skin and providing a quick-dry surface that minimizes chills once you're out of the water. Its chest zip features a GBS zipper barrier, which works with pressure-bonded internal seams to ensure that you won't have to worry about chafing on or off the water.