Breathe easy with the Clarks Un.Seal slip-on. This men's casual shoe features a premium full grain leather upper with a broken-in look; elastic goring provides easy on/off. A removable leather insole lends underfoot comfort, while the soft leather lining prevents irritation. A flexible EVA sole with rubber pads adds traction and reduces foot fatigue. Part of the Unstructured collection, the Clarks Un.Seal slip-on features the Clarks Air Circulation System: intake vents allow cool, fresh air to enter the shoe and channeled mesh creates a defined path for warm, moist air to escape through exhaust vents.