Universal Size: 12" x 8" (30cm x 21cm). This Xmas hat with led light perfect for kids, men, and women Holiday outing. Beautiful & fashion and enhance the festival atmosphereSoft Sweater Material: Double Layers, heavy quality knitted materials with high elasticity. Skin-friendly and soft, keeping head warm with adorable style, suit for indoor and outdoorEasy to use: Colorful blinking LED lights powered by 2 pcs button battery (included). Turning the switch to ' ON ' position to activate the lights. Easily replace the battery when there is no power.Occasion: This led Xmas hat with star cute deer pattern. Makes you more attractive, whether it is Christmas, club, dance, birthday party, bar activities, night cycling or other parties also the best Xmas gift for your friends and family100% Satisfactory：MERRY CHRISTMAS