Dimensions: 20 x 6.5 cm Safe and Fire-Retardant Material: This shoe dryer is made of ABS. The surface temperature is maintained between 50 and 60°C, and the core temperature can reach 150°C. Resistant to pressure and high temperatures, it will not burn or deform easily. 360° Heat Dissipation: The surface of the shoe dryer has numerous ventilation holes. During heating, warm air circulates inside the shoe, ensuring even heat dissipation and rapid moisture evaporation. Soles and uppers can be dried, even in hard-to-reach areas. Temperature Control: The shoe dryer offers three drying times: 4, 8, or 12 hours. This precise time control effectively protects your shoes from overheating. The shoe dryer is equipped with two integrated PTC heating elements. These elements destroy the environment conducive to microbial growth inside the shoe through high-temperature drying, thus inhibiting their development and eliminating odors. Portable: This portable shoe dryer is compact and easily fits in a suitcase or purse, making it ideal for travel or home use. No more worrying about dry shoes in cold or rainy weather! Versatile: This shoe dryer protects your shoes from moisture! Keep your boots warm on cold winter mornings! Precautions: - Do not immerse in water to avoid the risk of electric shock. - Operates only on a 220V AC power supply. - The surface may become hot during use; keep away from flammable materials. - Not suitable for children or people with reduced mobility. - Do not place polished or oiled shoes in the shoe dryer.