Features1LED Light Up Hat: Stay visible and safe during night activities with the built in LED lights that provide bright illumination. 2Night Illumination: The hat's LED lights offer reliable visibility for night running and cycling, ensuring safety in low light conditions. 3Warm and Insulating: Made of acrylic material, this hat effectively preserves your head from the cold, keeping you warm and comfortable. 4Multifunctional Design: Not only a lighting tool, but also a stylish everyday hat that meets various needs and adds a fashionable touch to your outfit. 5Lightweight and Comfortable: The hat is designed to be lightweight and comfortable, allowing for long wear without any discomfort, for outdoor activities.SpecificationItem Type: LED Knitted HatMaterial: AcrylicBattery Type: Lithium Polymer BatteryBattery Capacity: 250MAH (Shipped With Built In Battery)Size: Approx. 22 x 21cm / 8.7 x 8.3inPackage List1 xLEDKnittedHat1 x Instruction Manual