“Mike Force” refers to the Mobile Strike Force Command, a U.S. Special Forces unit that played a key role in the Vietnam War. This cap from Papa Nui pays homage to their distinctive black berets, featuring an authentic, hand-machined “M.F.” skull-and-crossbones-style patch. Its silhouette is based on the original 1951 field cap design, made in Japan from pure melton wool — softer and warmer than other caps in the range — and finished with a herringbone twill sweatband and a duck-lined visor.