Protect the extremities." That’s what one famous explorer said, although he was probably making comment on the fact that several intrepid adventurers have lost digits to frostbite. Cold feet on a dive certainly do not present the same risks as frostbite, but it's true that if your feet get cold on a dive, concentration can waver and an otherwise fantastic dive can be marred by discomfort. From Finsocks, designed to alleviate the rubbing from a full foot fin or keep the feet a bit warmer and comfortable in neoprene boots, to the Hotfoot and Hotfoot Pro, a drysuit sock with a water resistant outer layer, there is always a solution to keeping the feet warm.