Adjustable: Suitable for adults, boys and girls. One general size fits all. You can adjust the size of the cap at the back.
Material: Cotton. CR2016 lithium battery continuous work up to 72 hours (battery is replaceable). You could purchase the battery on watches shop, electronic mall, supermarkets.
Easy to use: "on/off" switch is concealed in the brim. There is a small dot sticker to notify you where the switch is. Four mode can be choosen: on, slow flashing, fast flashing, off.
Improve security: Best enjoyed and viewed in a low light or dark environment and can be avoided some potential traffic dangers.
Widely used: Make you look cool in dance fitness event, night club, disco, KTV, bar, banquet, party, floor show, stage show, evening show, performance show, vocal concert, and some other special events.
KABB Fashion&Cool LED Baseball Cap Light Up Hat Sports Travel Party Club Cap with LED Light Brim Come with Batteries Blue B06XPCN2RJ