Dogbowl
Contributor
In December I'll take a 3MM full suit and a tropic beanie any day over a 5MM-7MM suit without the beanie. For years I never wanted a beanie... Those things are for women to keep their hair up! That was until I got chilled on a windy December trip a few years ago and noticed those wearing beanies were perfectly comfortable. I scoured the Island for one and none to be found. All that could be found were full hoods which squeeze my fat head, screw with my mask, and I just downright hate.
Get a tropic Beanie in the 3MM range and experience the difference. I'll never dive without it again. Umm... The DM's who strap on the hoods and beanies December-March know what they are doing! They say 90% of your heat is lost through your head and since wearing my beanie I believe it is ABSOLUTELY true.
I love my beanie. Someone in my drysuit class saw me wearing it (in the pool) and bought one from the dive shop the next day. It looks stupid on but it's so functional.