A portable portable hair dryer designed for people who frequently move, travel and live in accommodation. The cuboid shape slightly larger than the palm of your hand makes it as easy as combing your hair when you use it. The usb interface charging design is adopted to avoid the trouble of storing wires. (In fact, it is designed for myself that I can't afford to buy a house and have a little cleanliness. It is a conceptual idea to entertain myself before school starts.)