The LED glasses is made of acrylic. It’s charged by 2pcs (button) batteries lasting around 60 hours’ lighting. The LED shutters glasses has one constant color. It does not block off the vision, no glare, no UV radiation, no effect on vision and no heat generation. These LED glow neon glasses will bring to your shindig. The glasses are made of environmentally friendly sturdy high-quality plastic that without fear of being easily damaged after falling. The light up glasses last longer time, are less likely to generate heat, have higher brightness and save energy. LED light up party favors for teens, kids and adults include on/off switches. Batteries are Replaceable.