This pair of green LED sunglasses are for adults. They come with batteries. To activate the LED, press the button above the nose. If you press once, the light will flash. If you press the button a second time, the LED light will blink at a slower pace. It remains steady if you press the button a third time whilst the fourth will switch it off. Jazz up outfits for a costume party or Carnival with this pair of groovy sunglasses.