Clarks - Quartz (Brown Nubuck) - Men's: Update your wardrobe with the modern Quartz slip-on. Breathable, full grain leather upper with elastic lacing for improved fit. Lightweight EVA footbed absorbs shock for reduced foot fatigue. Rigid heel counter and Lycra(R) twill liner provide stability and support. Rugged rubber outsole offers lightweight, long-lasting wear. Cement construction, where the upper is adhered to the outsole using a bonding agent, creates lightweight flexibility.