Puma Men's Faas 500 NM Running Shoe 100% Suede Rubber sole Features integrated BioRide Technology for a more natural and responsive ride Taxi AirMesh upper and PU overlays for comfort and support Open-hole mesh lining below the PU layer lends support as well as breathability Removable molded-KMS sockliner sculpts to your foot for the best possible fit A moderate rocker shape design allows for a biomechanically-efficient stride with effortless toe-off