Ozone Deodorization: Using ozone deodorization, air purification, for shoes, socks, gloves, shoe cabinets, refrigerators, sofas, bed tables and other odorous scenes. Air Drying: The function of this USB shoe dryer is to deodorize and eliminate odor, does not have a high temperature drying function, but can be air dried. Air Generator: The product contains an air generator, which generates ozone through air electric shock. Ozone has strong oxidizing characteristics and can eliminate odors quickly and greenly. 360 Degrees Stereo Airflow: 360 degrees without dead ends to emit ozone, from the tip of the shoe to the heel on 15 seconds evenly distributed to purify odors. Small Fan: This shoe dryer has a small fan inside, which can slowly air dry the humid environment, thus playing the role of drying shoes.