Top quality product. Features: This Christmas is perfect for most boys, girls, men and women with good elasticity. Powered by button battery (included), flip the switch to "ON" position to activate the lights. Made of premium material, skin-friendly, soft and comfortable, suitable for indoors and outdoors. Features with luminous strap patterns, bring you a comfortable, fashionable and comfortable feeling, to highlight yourself. LED flash can make your presentation more conspicuuous whether it's Christmas, club, birthday party, bar activities, night cycling or other parties, the best gift for your parents, friends and yourself. Specifications: Dimensions: approx. 20 x 24 cm. Shell color: see photo. Light color: multicolor. Power supply: 1 CR2032 battery (included). Quantity: 1 piece. Since measurements are taken by hand, the sizes indicated may vary by 0-1 cm. Please only order if you accept this margin of error. The color of the actual item may vary from the pictures, depending on your computer's display and brightness settings. Thank you! Package: 1 x LED Christmas hat (other accessories demo in the picture is not included).