Features: High quality polyester, one size fits all. Comfortable to wear. Double light color, bling Sequins design, luminous and shining. Easy to use, designed with single-button. Press the button on the battery case to change the glasses to light in any one of four modes: constant light / slow flashing light / flashing light / shut off. Pretty cool and fashion, lighting up festival atmosphere, it will make you to be the star of parties, have a great time. It is portable, durable and lightweight. You can take it out with you convenient.