Glovion LED Light Up Illumination Suspenders for Party Favor Sturdy LED strips ,high visibility. Become an eye catcher for your Wedding party Show or night walking One size fits most People ,Lightweight, versatile and comfortable Work with 2 PCS CR2032 cell battery ( included); You can replace it with screwdriver Three Lighting ways for different usage situations : Constant on, Slow Blink, Quick Blink. Battery pack is integrated into the strap in the back area of the suspenders Perfect for Wedding ,Concerts, Halloween, Costume Parties, Mardi Gras, Carnivals, Rave Festivals, Bars, Clubs, Electric glow run, LED parties, Halloween, Costume Parties, Mardi Gras, Carnivals, Gifts, and more