Features: Material: Made from wear-resistant and durable acrylic material, skin-friendly, fade-resistant, and keeps you warm throughout the day. Easy to Use: This brimless hat comes with a 250 mAh rechargeable battery, USB rechargeable for convenience. The on/off switch is located on the light, which is fixed and hidden in the band. The light is operated with a single button. Hands-Free Design: The hat features a removable LED light that is lightweight and portable, allowing you to stay warm and safe while keeping your hands free for other tasks. Washable: The LED knit hat is washable and easy to clean. Be sure to remove the light and battery before washing. Widely Applicable: Ideal for activities such as running, biking, skateboarding, camping, hiking, jogging, handyman work, snowmobiling, barbecuing, traffic monitoring, auto repair, ice fishing, dog walking, and outdoor chores. Notice: The actual color may vary slightly from the image due to lighting effects. Please allow a 1-3cm deviation due to manual measurement. Asian sizes are smaller than EU/US/UK sizes, so please compare the detailed sizes before purchasing. Material: Acrylic Size: 22*21cm Charging: USB direct plug Power Supply: Built-in 250 mAh battery Package List: 1 x Hat