Function: drying, warm, eliminate bad odor and sanitize shoes! Protecting your shoes from humidity! Warm your boots in cold winter morning. To dry gym shoes or athletes foot shoes. Suitable all types of shoes and boots, cotton slippers, leather shoes, canvas shoes, work boots, snow boots, and sneakers. 360 All Rounded Heat: 1532 air-holes through its surface that ensure an even distribution of heat; radiate heat evenly while accelerating more type of shoes, accelerates moisture evaporation. PTC Heat Generator: Precise temperature control to keep drying temperature always at 55 in order to protect your beloved shoes from over-heating whilst efficiently dry your favorite boots and sneakers without causing any damage. Timed Auto Self Off: For shoes of different materials and thicknesses or at different moisture, you can set 3 / 6 / 9 H timer shutdown. It can run safely and silently, a necessity in winter.