Our neon pink tumblers feature a built in bright white LED and also features 3 fabulous light functions. With a click of the on/off button you can choose from fast flash, slow flash and steady on to illuminate your party cocktails. Use our Neon Pink LED 12 oz Cup to celebrate Bachelorette parties, Sweet 16’s or for any party with a pink color theme. Our Neon Pink 12 oz Cups are also black light reactive and look amazing on and off, day or night! Hand Wash. Batteries included & installed.