Air circulation technology helps keep feet feeling fresh and comfortable in Clarks Unstructured Womens UnBelievable LoafersFind versatile style combined with breathable comfort and a great fit in this casual leather loafer. The Air Circulation System helps keep your feet dry and cool, replacing warm, moist air with fresh air to prevent odor. Surround your foot in softness with a padded collar, supple leather linings and removable Ortholite footbed.