Ariwrote a review of Blueseventy Thermal Skull Cap on October 28, 2014
Familiarity: I've put it through the wringer
This cap really kicks out the warmth, which I find very helpful in the lakes around my northwest home base. It's hard to say just how warm it is but if you find yourself needing to swim in really cold water (who doesn't. am I right?) this is great pickup. I've been giving it regular use for a couple months and its holding up great.