Sound Reactive Light Up Face Mask - Butterfly Light up the dancefloor at your next rave party by wearing this neon butterfly light up costume mask! This awesome face mask is sound reactive - so it lights up to the beat of the music, or to your voice - making it a must-have festival accessory too! Includes: Mask Battery Box Description: Novelty face mask is made from black fleece fabric and covers the nose, ears, mouth, chin, and neck. Mask goes around the head with a large velcro strip closure at the back and features some breathing hole in the front centre. At the front of the mask is a plastic section featuring an LED picture of a green, red, and yellow butterfly. This front LED section lights up and is sound reactive to speech and outside sounds. Inside the mask is a fleece pocket containing the cord and battery pack, which can be removed. The battery pack features an on and off switch as well as a sound sensitivity dial. All the electronic components are removable if the mask needs to be cleaned. This light up costume mask is adjustable in size and will fit a head/face size of up to approximately 60cm around. Mask requires 2x AAA batteries, which are not included.