I finally found & bought myself a 3mm 4th Element drysuit hood. I have been looking for a 3mm hood high & low for a couple of years for one of these & now I have one! Why would anyone want a 3mm hood with a drysuit??? Well,... when I am cave diving, a 5 mm is a bit too much & too confining (IMO) & a beanie exposes my neck to the 72 degree water causing a rapid cooling effect:cold:. The hood fits snug around my face, preventing the buildup of exhaust bubbles under the hood & is not choking around the neck (a sensation I can not stand). This gives me the best of all worlds.:blinking: