50’s Men's Straw Boater Hat with Lavender Band by Cornell '53No size marked; measures as a 7 1 4. There are several web sites out there that will assist you in determining your hat size; you just need a flexible measurement tape and you can consult their size charts after you know your head size. Hat measures 8" in inside diameter front to back , 6. 5" inner diameter side to side, brim is 2. 5" wide and height of crown is 3. 5". Fabric is genuine straw with ribbon hatband and leather sweatband. Marked "Cornell