ON THE EXECUTIVE FLOOR THINGS ARE A BIT DIF FERENT. In different areas of the foot, varied patented X-SOCKS^® technology comes into play during the summer in the X-SOCKS^® Executive as necessary. The materials: pure cotton or cotton with Elastane, Lycra or Polyamide. On the heels, the footbed and the Toe Protector the TerryLoop surface transports moisure away from the skin immediately. The Lambertz-Nicholson Achilles Tendon Protector guards against pression and friction with its top cuff. The AirConditioning Channel^®, the Traverse AirFlow Channel System^™, AirCool Stripes and AirGuides^™provide for an optimal barefoot climate.