- Men's black shirt - Montmartre collar, short sleeves - EASY-REGULAR shape, exclusive IKKS tapestry pattern - Button closure - IKKS #actforbetter: material containing 100% LENZING™ ECOVERO™ viscose from sustainably managed forests IKKS revisits rock style in a baroque spirit, with this flowing short-sleeved shirt. Let yourself be tempted by its exclusive tapestry print, played out in black and white.