-variety:EL cold light cap, EL shine cap, EL shine travelling-cap and EL flash golf cap, semi-sphere cap.

-colour:various colour(main colour:black).

-material:light twill cotton, heavey brushed cotton, brushed cotton.

-power:1* CR2032 button battery.

-cap style:men, women.

-Size:adjust by hand.

-advantages:light, no ultraviolet rays, long lifetime.

-usage:parties, bars, fields, vocal concert, sport game etc.