The wonders of the wool introducing the natural the latest shoes to the Apex fit lite collection Simple natural sustainable extremely comfortable breathable wool upper (minimizes odor & regulates temperature). our product development team searched high and low for the most innovative textiles in shoe design and found our wooly Friends are a fabulous resource for shoes! Not only is wool natural, but it also aids in breathability, optimum comfort, and temperature regulation. This attractive, fashionable, functional, versatile shoes has universal appeal for both women and men and can be worn comfortably year-round.