Features: brand new and high quality This LED hat are made from an ultra-soft wool that provides excellent insulation against cold winter. Light your way when you need it, its standard USB port allows you to charge in the car, with your computer, or using portable power-bank. When this LED hat need cleaned, simply light and throw it into the laundry or wash it by hand. Its perfect for walking, biking, grilling, auto repair, and more. The product has three kinds of adjustable brightness, which can be highlighted for about 2 hours when fully charge, 4 hours in medium brightness and 6-8 hours in low brightness. Cleaning: Press the LED lamp inside the hat to remove the lamp body. Specifications: Material: Wool Size: Approx. 20x18cm/ 7.87x7.08in Color: Lake-blue, Black, Tangerine, Red, Yellow Package Includes: 1pc Knitted Hats with Headlamp note: 1.Please allow 0-1cm error due to manual measurement. make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you