Key Benefits Ultrasafe 5V ultralow voltage operation with a waterless design that eliminates risk of leaks or electric shock while delivering safe, cozy heat. Adaptive heating that warms up quickly in 3–5 minutes with adjustable temperature settings, providing lasting comfort for tired feet on cold winter nights. Portable USBpowered heating that does not require a direct outlet; works with power banks and car chargers for soothing heat anywhere, ideal for winter adventures or business use. Gentle warmth experience with soft, comfortable fabric and a woollike feel from plush coral or flannel layers, preventing dryness and irritation while you relax indoors in chilly weather. Product Features Function and safety: 5V ultralow voltage design with a waterless system for safe operation and reliable warmth. Temperature control: Quickly reaches comfortable heat in minutes and offers adjustable settings for warmth. Power compatibility: USBpowered, compatible with portable power banks and car chargers; no dedicated outlet needed. Materials and comfort: Soft fabric with a plush coral or flannel layer to deliver cozy, woollike warmth and comfort. Practical use: Designed for indoor lounging and steady warmth during cold days and nights. Use Scenarios Home relaxation: After a long day, connect via USB to a power bank or laptop to warm your feet while you unwind on the couch. Travel or commuting: Use a car charger or portable power source to keep feet warm during winter drives or on business trips. Hotel or office settings: Plug into a USB power source at a desk or in a hotel room to maintain warm, comfortable feet during work or study.