- Men’s black shirt - Monaco collar, long sleeves - Short, SLIM fit, no darts on back, polka dot print - Buttons to fasten, IKKS button on left cuff - IKKS #actforbetter: fabric contains 100% LENZING™ ECOVERO™ viscose from sustainably-managed forests Give in to the appeal of how this shirt flows in LENZING™ ECOVERO™ viscose from sustainably managed forests. And check out polka dots again, boosted with a rock mood.