OTTO CAP 6 Panel Low Profile Baseball Cap - Brushed Cotton Twill Illuminated "Frame Cap" Lights Oval 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; Precurve Visor; 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