Ask for warm weather and sometimes you get the cold anyway. The Roxy 4/3 Syncro+ Chest Zip Wetsuit is for those times in life when the water just looks way too good to pass up and you can't bother wasting time staring at the plummeting mercury. WarmFlight lining on the chest and back helps keep your chest and back warm while you chase adventures in cooler temperatures, with special Thermal Smoothie panels to help keep the wind out and the heat in.