10% Wool 88% Acrylic 2% Spandex, Structured, Firm Front Panel, Low-Fitting, The Flexible Fit. 6 Panel Flexible Fitted Cap; Seamed Front Panel with Full Buckram; 6 Sewn Eyelets; Pro Stitch on Crown; 8 Rows Stitching on Visor; Matching Color Undervisor; Enclosed Closure; U.S. Patent 6493880; Available in S/M (56cm -59cm/7 - 7 3/8 /22" -23.2") & L/XL (59cm - 62cm/7 3/8 - 7 3/4 /23.2" - 24.4"); This Style Replaces 94-528; Colors 016, 032 only available in S/M