Uber cool light up blindfold! One size fits all, fully adjustable head strap and bridge chain, this awesome blindfold features an ever-changing multi-color light scheme. Have the coolest blindfold in the world! You really need to see it to believe it, this is a psychedelic lightshow on your head! The lights slowly turn from red to blue to green and all the colors in between. Each light runs on 2 CR927 lithium watch batteries with are included, PLUS an additional set of batteries at no extra cost. Each set of batteries will power this blindfold for at least 10 continuous hours. Not only will you see a light show on the outside, the wearer also sees the lightshow inside the blindfold. We've specially designed this blindfold to light up inside the goggles to create a meditative effect for the wearer, all other light is completely blocked out, it's a real sensory deprivation experience! As if you needed more, this blindfold also features our unique double head strap design, this adjustable head strap goes on and stays on! What else do you need to know? You need the coolest blindfold on the planet in YOUR toy box.