Front light and rear light: This flashlight cap has two lights.The front lights are very bright, so you can see obstacles, and the rear lights, also called red lights, are designed on the back of the hat to allow the driver to notice you in the dark and avoid road accidents.the circulation. USB Charging: Built-in and detachable rechargeable LED lights, built-in USB connector for charging.Can be charged from any USB port: car charger, mobile power and PC, no need to repurchase or recharge the battery, no additional charging cable.Just press a button to turn the lights on/off! One size fits most people: Head circumference: 56-65 cm (22 inches -25 inches).Unisex style, super soft material.The stylish hat design with lights makes you look good and keeps you warm in cold weather.This hat can be stretched and is suitable for most men and women. 3 BRIGHTNESS SETTINGS: Our LED light cap has 3 modes to let you see clearly in the dark.The headlight can illuminate a distance of up to 30 feet.It directs directional light toward what your eyes are looking at All Occasion Use: Warm winter hats can be used for indoor and outdoor activities, such as sleeping, walking the dog, cycling, skiing, snowboarding, running, camping, traveling,fishing, hiking, motorcycling, etc. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.