- Men’s navy overshirt - Monaco collar, long buttoned sleeves - EASY-REGULAR fit, checks - Buttons to fasten, IKKS button on left cuff - IKKS #actforbetter: fabric contains textiles (polyester, viscose and elastane) from Global Recycled Standard (GRS) recycled raw materials The overshirt joins the men’s wardrobe, making styling clothes easier between seasons. It’s got navy and ecru checks and can be worn open or done up.