John Hanly & Co Men&rsquo;s Flat Irish Hat 100% Wool Green Herringbone Made in Ireland Flat Irish hat crafted from 100% wool tweed for a warm, durable and comfortable cap. Dry clean only for long lasting wear. Small (6-7/8) = 22", Medium (7-1/8) = 22 , Large (7-3/8) = 23 , XL (7-5/8) = 24  measuring from the widest point of the head. Made in Co. Tipperary, Ireland by John Hanly & Co.