USB powered heating with a low current design for safe, energyefficient warmth. Compatible with computer USB ports, power banks, and USB wall adapters. Provides uniform heat and stable performance, with portability and easy recharging. Size and coverage Size: 39 cm x 22 cm Wide coverage for versatile use: calves, feet, knees, abdomen, waist, shoulders, neck, and hands Lightweight and portable, making it convenient to use at home, in the office, or on the go Safety and design Dryheat heating, no water inside, reducing spill risk and making it safer to carry outdoors Simple to operate: connect to a USB power source to start heating Low current design focused on safety and reliable performance What it offers A practical alternative to traditional hot water bottles, with safer handling and easier transport Consistent warmth over a broad area for comfort and muscle relief Care and maintenance Wipe clean with a damp cloth as needed; ensure it is dry before storing or reusing Use scenarios Home relaxation: warm the neck and shoulders after work or use on the abdomen or back for comfort Postexercise recovery: soothe calves, feet, and knees after a workout Office or travel warmth: keep hands, forearms, and shoulders comfortable during long days or flights This description reflects a USBpowered, dryheat heating pad with a 39 cm x 22 cm surface, designed for versatile bodyarea use, safety, and portability without relying on water inside.