1. It can be used in all seasons, no shoes are left idle. Whether it is winter snow or thin socks, it can be dried easily.2. The shoe dryer is mini, which can be deeply placed in the shoes, the heat is and more uniform, and the that are difficult to dry can also be dried.3. The built-in violet light and PTC heating can destroy the living environment of microorganisms through high temperature and drying, take the odor and inhibit the growth of microorganisms.4. If you have any questions about the product, you can contact customer service to solve.1. Product name: Quick Drying shoe dryers2. Product material: ABS+PC3. Working voltage: USB 5VColour:blueSize:16.5 x 6 x 2cmPackage Contents:1 pair x shoes dryer1 x USB power cableOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.