Enhanced safety and temperature control: Insulated electric heating wire delivers five adjustable temperature settings, with protection against overcurrent and overheating for prolonged use. Rapid, USBpowered warmth: Carbon fiber heating plate provides quick warmth through a USB port, compatible with standard USB power sources. Flexible, secure fit: Hand washable design with an adjustable drawstring; heated slippers wrap snugly around the feet for a warm, comfortable fit. Durable winter comfort: Plush lining for maximum comfort combined with a wearresistant, nonslip sole for longlasting use. Use scenario 1: At home during cold mornings or evenings; plug into a laptop, charger, or power bank to keep feet warm while working or relaxing. Use scenario 2: In a cold office or study; maintain warmth during long seated sessions without needing to move around. Use scenario 3: In a cabin, dorm, or camping setup with a USB power source; stay warm indoors or in a chill environment.