【One Size Fits All】: Blue and red two-piece. Unisex led Christmas hats fit for kids, adults, men and women. Light up santa hat has good elasticity, it will be fitting closely, won't make you feel too tight or loose. 【Soft and Warm】: Colorful luminous knitted hats, winter knitted Christmas hats, skin-friendly, 360-degree warmth, lovely appearance.Christmas hat is very soft, has better heat preservation and elasticity, suitable for indoor and outdoor use. 【Christmas Gifts】: Suitable for Christmas gifts, Christmas parties, stage performances, decorative props.Increase the festive atmosphere and holiday fun, this is the best Christmas gift for your parents, children, friends. 【Easy To Use】: Find the switch hidden on the hat edge and turn switch to "ON" position; Press the on/off button to activate the light.You can switch between three different modes of the light. 【Note】: The funny xmas hats battery is not replaceable. When the battery is out of power, you can still wear it, but it will not glow. If you need light up christmas hat with replaceable batteries, please enter the store Flowersun to purchase.