Shop Men's at RalphLauren.com, the Official Site of Ralph Lauren. Polo Hat - Crafted from warm lambswool, this classic hat features an allover reindeer-and-tree pattern and a knit historical American flag. Pom-pom accents the crown. Knit allover reindeer-and-tree pattern. Knit historical American flag accents the front. Knit "Polo" text is at the back. Rib-knit brim. 100% lambswool. Hand wash. Imported.