OAMC Men's Tops. Fashion category - Casual Button-Downs. SKU - OAMU600968 COTOA005B 050. Color - Fog Grey. OAMC Men's Fog Grey New Universe Long-Sleeve Lumen Shirt. A cotton-lumen shirt featuring a classic collar, front button fastening, long sleeves with buttoned cuffs, a curved hem, and a graphic print on the rear. Cotton 100%