Atan Sunfast 3MM Wetsuit Shoe. Many of you will already know that Atan have for many years made the most flexible and warmest boots available in the market, particularily distinguished from other manufacturers by their incredible barefoot feeling sole unit. The barefoot feeling is made possible by using a natural latex dip procedure which is a unique process to Atan. These shoes are extremely light, flexible, comfortable and warm.The sunfast shoe features glued and blindstitched seams, soft latex sole and a draw string toggle closure.