OTTO CAP Young Adult 6 Panel Low Profile Baseball Cap - Brushed Cotton Twill Illuminated "Frame Cap" Rectangle 1 Solid Color Available 65% Polyester 35% Cotton, Structured, Firm Front Panel, Low-Fitting. 6 panel cap; Seamed Front Panel with Full Buckram; 6 Sewn Eyelets Matching Visor Color; Pro Stitch on Crown; 8 Rows Stitching on Visor; Matching Fabric Undervisor; Matching Color Sweatband; Matching Fabric Adjustable Hook and Loop Closure; Luminescent Light, Flashing or Steady; Two "AAA" Batteries Required (not included); Can be Seen from 1/2 Mile Away at Night; Interchangeable Insert of Design; U.S. Patent 4,999,936; Size: Young Adult (54cm/21.2")