Neck seal is causing reduced blood flow to brain, not good. Lightheadedness and nausea can be the results. This used to happen to me along with sweating, soaked undergarments, extra ballast, miserable surface swims, inability to pee if I wanted to without diapers or a cath, constantly chasing pinhole leaks from getting sent into urchin spines from surging ocean waters, failing zippers, and a final nail in the coffin was the fact that it was going to be about a $900 bill to have the zipper replaced.
So I gave up drysuit diving and went back to very well fitting custom wetsuits and couldn’t be happier.
Is a well fitting quality 7 mm wetsuit out of the question?
Talk to Dano, a good Freediveshop wetsuit is very toasty and comfortable.