NIKE ZOOM Lightweight Mesh Upper Gray Running Shoes - Color: Gray - Design: Mesh Upper - Sole Material: Rubber Sole - Features: Lightweight - Usage: Running AQ2210-200 NIKE ZOOM is an innovative and explosive cushioning system designed for speed and agility. This technology uses compressed air and tightly stretched fibers. After absorbing impact, it quickly returns to its original shape, enabling speedy movement and reducing stress on muscles, joints, and tendons. I haven't worn these shoes very often, but they've been stored in a closet for a while. I inspected them before listing and have cleaned and brushed them as much as possible, but please forgive any overlooked dirt or mold. Returns are not accepted for any reason, so please examine the photos carefully before purchasing. Please refrain from purchasing if you are not accustomed to used items, are overly sensitive, or are slow to provide feedback. Thank you for looking.