Exposed construction on the side of the heel gives a shell-like appearance Reinforced lightweight mesh with a 360-degree zonal cabling system Air Zoom unit in the heel and forefoot supports landing and gives you a propulsive feeling Air Zoom unit in the heel and forefoot supports landing and gives you a propulsive feeling Lace closure  The LeBron XXI has a cabling system that works with Air Zoom cushioning and a light, low-to-the-ground design, giving you agile fluidity without excess weight. Drawing inspiration from the Oyster's cultivation process, this style has a glow-in-the-dark outsole that takes its cues from the vibrant organisms dwelling about the ocean floor. Product Code: FV7275-401