Please use the following scale to detemine your true hat size. Hat Size Head Inches Size Code 6 1/2 20 1/4" Kids Small 6 3/4 21 1/4" Kids Large 7 21 1/2" S - Adult Small 7 1/4 22 1/4" M - Adult Medium 7 1/2 23" L - Adult Large 7 5/8 24" XL - Adult Extra Large 7 3/4 to 8 24 1/4" to 25" 2XL - Adult Double Extra Large Click here to view our complete selection of Discount Top Hats, Derbys and Fedoras TOP HATS.US HOME