Men's Hanna Tweed Flat Cap for Men- Gray Made in Ireland - 100% Irish Tweed - Traditional Style Customer Sizing Comments - "I wear a 7&1/2 US, and the L cap fits perfectly." Sizing - "I usually wear a size 7 5/8 or 7 3/4, depending on the hat, and the XL fits perfectly." Casual and Formal Wear Real Irish Wool