About this item 100% Acrylic Imported Three-Brightness Adjustable - LED lights have a strong glow, and our Led beanie cap has three luminosity levels that you can adjust by pressing. On a full charge, it lasts four hours in low light, three hours in medium light and two hours in high light. Rechargeable Knit Caps - Our stitch caps offer standard USB charging ports, are easy to remove, and can be used with adapters, car chargers, U.S.B. sockets, laptops and power banks, etc. No extra data cable is required, and for two hours you can have him light your way. Keep You Warm - 100% acrylic ultra-soft material that will keep you warm and comfortable during the cold winter months, is hand and machine washable, and will not only keep your head warm, but also act as a headlamp to release your hands and keep you safe and warm at night. Wide Application - This winter beanie with LED lights is One Size Fits All..LED hat light has elastic fits for most head sizes (size of hat:20*22cm), carefully designed, wear it, dog walking, jogging, skiing, biking, camping, hunting, fishing, hiking, running, handyman work, barbecuing, car repair and home improvement or any other activity that requires hands-free lighting.