Light Up Hat,Glowseen LED Glow Baseball Hat,USB Rechargeable -Blue PERFECT DESIGNBlue light,black hat,the party hat through the PU ultra bright optical fiber strip, realizes the whole fiber optic luminescence, to achieve the bright warning safety function.effective rain water proof, remove the switch box, line lamp when cleaning, and the guiding light bar will not move.Suitable for dark or night activities of party, outdoor sports, fairs, through the ultra bright LED fiber optic light, expressly warning role,fashion design ,no matter day or night is fit ADVANTAGEUSB Rechargeable Battery, Eco-friendly, No More Wasting Money On Batteries, and more economical than battery powered versions of this product.Rechargeable via USB - (cable included) gives more than -6-10 hours of illumination per 2-hour charging,LED light with fiber optic wire as brim APPLICABLE SCENARIOPerfect for Concerts, Rave Festivals, Bars, Clubs, Electric glow run, LED parties, Halloween, Costume Parties, Mardi Gras, Carnivals, Gifts, and some other Special Events. let you become a eye catcher!One general size fits all- adjustable,atually it is suitable for kids&adults,which make it perfect as a gift EASY TO USELed hat, easily adjustable light up baseball cap flashing bright women men sport hat for Hip Hop party,jogging,camping,Christmas.Four mode can be choosen: on/slow flashing/fast flashing/off.You can adjust the size of the cap by the velcro at the back.Improve security: Best enjoyed and viewed in a low light or dark environment and can be avoided some potential traffic dangers GUARANTEED FOR LIFE Each light up cap is made out of the highest quality materials and has a lifetime guarantee for the quality of the materials as well as the laser engraving