Phylon midsole for lightweight cushioning.The Nike Air Max Thea Premium Women's Shoe is equipped with premium lightweight cushioning and a sleek, low-cut profile for lasting comfort and understated style. Visible Max Air technology for maximum impact protection. Minimal textile-based upper with synthetic and leather overlays for targeted support with a lightweight feel. Phylon midsole that doubles as an outsole for traction, durability and reduced bulk. Solarsoft sockliner for superior comfort. Nike's revolutionary Air-Sole unit made its way into Nike footwear in the late '70s. In 1987, the Nike Air Max debuted with visible air in its heel, allowing fans more than just the feel of Air-Sole comfort. Suddenly they could see it. And just a few years later, the next-generation Nike Air Max 90 became a hit with both athletes and collectors by offering striking color combinations, lightweight performance and a cushioned ride..