Henderson 5/3mm Men's Thermoprene Pro Hooded Vest

I use mine for warm water scuba diving and cold water surfing and the sizing was simple and appropriate and mine (I have 2) are well made.

I found this while looking at 5mm+ full dive wetsuits and it's worked out very well over at least 20 snorkel sessions. With water temps dropping to about 54F. I needed something more than my 3/4 wetsuit. This, worn underneath my wetsuits, has kept my core much warmer and eliminated any water getting in under my old separate hood.As water temps warm up I am using a 3/2 suit with this underneath and I am perfectly warm. Would advise divers and surfers that this is a great, affordable way to increase the warmth of your suits without spending twice as much for a new full suit.