If you want true thermal comfort while diving, if you want to stay warm the entire dive, not just non-hypothermic, but doggone-it, downright toasty, you’ve got basically two choices: become a short-legged flightless bird from Antarctica - or buy a dry suit.
The latter is what more and more divers, regardless of the water temp, are doing. Dry suits aren’t just for Great Lake gorillas, Florida cave jockeys and mid-Atlantic …