1、Elastic drawstring, you can adjust the size of the hat mouth to achieve the comfort level you want. 2、Even and detailed double-layer wire, fast heating, make the hair mask nutrients easier to absorb, the effect is better. 3、The inner layer material is made of PU insulating fabric, waterproof designs, convenient for use. 4、Equipped with constant temperature control device, the power is automatically cut off when the temperature is too high to avoid danger. 5、3 gears intelligent switch, you can adjust the temperature of the electric heating hat at any time according to the hair dyeing process. 6、The quality carbon fiber thermal conductive core is maintained at a constant temperature of 60 degrees Celsius, so that your hair can totally absorb the maintenance ingredients. 7、It can effectively shorten the hair dyeing time and make the hair color more uniform and firm. 1 x Hot Oil Treatment Hat Condition: 100% Brand NewItem Type: Hot Oil Treatment HatVoltage: 220VPower: 50-70WTemperature: 20-65°CFeatures: 3 gears temperature control, rapid heating, allowing perm agent and hair mask to be easily absorbed