Anyone have suggestions for undergarments for water in the 65-75 degree range? I have thicker undergarments that are good for down to 40ish degrees (or at least as far as I have had them). Tried my undergarments in the pool that was heated to 80 degrees and it was far too heavy. Looking for something lighter I can use in the waters where if I wasn't in doubles I'd be in a 3 mm or 5 mm wetsuit.
Doesnt have to be dive-specific, was planning on heading to REI and checking out their thin fleece layers, just wasnt sure what thickness(es) to start with.
It seems that comfort is a very individual thing, and you fall on the cold-tolerant side of the spectrum. The Florida springs/caves are 70-72 F, and a very common undergarment weight is 200-250 g. I wear a Santi BZ200 jumpsuit, for example. Sure, for a short dive, on a sunny day where one can warm up between dives, a 5 mm wetsuit would work, but for 1-hour or longer dives most people go drysuit and substantial undergarment. When I dive in the Mexican caves, and the temperature is more like 76 F, I use the REI fleece baselayer that you mentioned. Just a few degrees makes a difference to me. At 80 F, I'm sure I would be in an Under Armor Heat Gear baselayer and nothing more.