Features:*High-quality material: made of high-quality material, wear-resistant and durable, skin-friendly, won't fade, keep you warm all day long.*EASY TO USE: This brimless hat with 250 mAh rechargeables battery is USB rechargeable, simple and convenient, and the on/off switch is located on the light, the light is fixed and hiddens in the band. One button switch, simple and convenient.*Hand-Free Design : This brimless beanie hat is designed with a removable LED light design that is lightweight and portable, keeping you warm and safe while leaving your hand-free to do the work you need to do.*WASHABLE DESIGN : This LED knit hat is washable and easy to clean. Note: Please remove the light and batteries before washing.*WIDELY APPLICABLE: This hat is suitable for running, biking, skateboarding, outdoors, camping, hiking, jogging, handyman work, walking, snowmobiling, barbecuing, traffic monitoring, auto repair, ice fishing, dog walking, outdoor chores, etc.Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurement3.Asiansizeissmallerthaneu/us/uksize,pleasecomparethedetailsizeswithyour beforepurchasing. Description:Material: acrylicSize: 22*21cmCharging: USB direct plugPower supply: built-in 250 mAh battery