Features: 100% brand new and high quality. 1. Temperature warning - Comes with thermometer attached aside with showing 0-20 degree Celsius/ 32-68 degree Fahrenheit. As the blue cube show in the sun, you can wear this cap at 0 and 5 degree Celsius/ 32 and 41 degree Fahrenheit, which is the best temperature for you to wear. Colder than - 20 degree Celsius / - 4 degree Fahrenheit is not suggested to wear this scarf. 2. Keep warm - Comes with thicken fleece and 3 layer. On the surface is the cold-resistant layer, middle is the thermal insulation layer, inner is breathable thermal layer 3. 6 way to wear - You can wear it as the windproof sandproof mask, half face mask, full face mask, winter hat, neck scarf and scarf covering your mouth. 4. Suitable for most people - One size, limited elastic. This scarf can be used for most adults including women and men 5. Wash warning - Once you want to wash this hat at the first time, please hand wash it for it will fade slightly as it it dyed. After that, you can use the machine to wash it freely