Come and see our amazing products. Our novelty light-up knitted hats are made of acrylic elastic fibers which is soft and comfortable to touch, the double layered liner can keep your head warm and cozy, fit for wearing at indoor and outdoor. There is a hidden switch inside the seam of this Xmas hat, just turn on the switch and you will see the led light up; This led has 3 different light modes, including solid, twinkling and alternating patterns, every pattern is attractive. The Christmas beanie hat has nice elasticity, can fit for most kids, men and women and won't tighten people's head. It's a thoughtful present for your families and friends on Christmas, Halloween, New Year and music festival party. Pls confirm further with us if any query about packing info, inventory status and time schedule.