Our Assorted EL Wire Masks each have an adjustable black elastic band and fit securely on your face. There is a replaceable CR2016 battery installed to power up the multi-function mask. Perfect for Halloween nights or Mardi Gras parades. Our Assorted LED EL Wire Masks are sold in packs of 3 assorted colored masks including red, green, and blue. Please order in increments of 1 pack.