Ariaprene Mesh Please review the Sizing Info to check your SOCKWA size to order the perfect pair Ariaprene is odor free, hypo-allergenic, and superior insulation Designed for everyday use; indoors and outdoors Light weight and BREATHABLE Barefoot feeling; Free your sole The X8 is the newest product at Sockwa. This minimal shoe has an Ariaprene upper to allow for extreme breath-ability. The lining is made with a moisture-wicking fabric which prevents odor on the hottest days. The sole is ultra-thin polymer, thickness is only 1.2 mm. The thin sole allows for you to feel the earth on your feet with great traction. Please refer to our specialized size chart to ensure that you are ordering the correct size.