- Boys’ green shirt - Shirt collar, short sleeves - Exclusive IKKS graphic palm trees print - Buttons and a press stud to fasten on front - IKKS #actforbetter: fabric contains 100% LENZING™ ECOVERO™ viscose from sustainably managed forests This boys’ shirt has an exclusive IKKS graphic palm-tree print on LENZING™ ECOVERO™ viscose from sustainably-managed forests. The bright green and navy duo adds a smart sporty twist.