Just got done with a week of diving caverns and caves in Mexico. In 72 degree water, at first wore the set along with. 3mm neoprene shorty, was too hot, so wore JUST the Exowear jacket and pants, day in an day out! Was warm, and very comfortable, and I normally run cold. I tried Sharkskin and Exowear. BY FAR prefer the performance of Exowear!! Getting the correct size may be a bit dicey, but once you settle that, incredible experience ????