Light up your bottles in the almost the most natural way. The Lightning Bug USB Bottle Light is made from a silicone that absorbs daylight. Once nighttime comes round it emits the light and glows like a firefly. If that isn't impressive enough, to give it a boost, we've also included a LED. Powered by USB it will glow all night! Now have some fuyn turning your old bottles into lights with Lightning Bug USB Bottle Light Battery life lasts up to 24 hours! USB attachment for easy charging Fits all standard bottles Material glows in the dark