Trinity 150, 100% wool, herringbone, tweed, men's size small, flat cap, driving hat handcrafted by Mucros Weavers Workshop in Killarney Ireland. The colorway is charcoal gray with a touch of blue. The black quilted lining is 100% cotton. Dry clean. Based on their size chart, a medium corresponds to a hat size 7 1/8 and 22 7/8 inches. In great pre-owned condition with minor signs of wear.