Almost 70% of heat is lost through the head. The Fourth Element Xerotherm Beanie hat, which is warm even when wet, is perfect pre and post dive thermal protection.
And you'll look like a true professional!
Using ultra fast wicking fabric, the Drybase garments are the ideal alternative to cotton underneath, a thinsulate or other undersuit. The garments' exceptional wicking performance means that the skin is kept dry and the wearer is much more comfortable during and after the dive, and is able to get the most out for the performance of their undersuit.
The Xerotherm range is unisex and is designed to be worn under another undersuit or neoprene drysuit, without contributing to buoyancy or bulk.