PLEASE NOTE: The product comes with a Christmas card so you can give the product as a gift to your friends or family at Christmas. WIDE APPLICATIONThe heating slipper warmer is suitable for men and women, about 27.5cm/10.83inch in length, fits feet sizes up to 43. Lightweight and portable, suitable for indoor, home, office, dorm, car, etc. SOFT MATERIALThe heating slipper foot warmer is made of short plush and non-slip cloth, soft, very warm, breathable, smooth and comfortable to touch, skin-friendly, with invisible zipper, the slippers can be cleaned after taking out the heating pad. GREAT GIFTIn the cold winter, heated shoes can keep your feet warm and comfortable, relax and promote blood circulation. An excellent gift for your lover, family, friends, classmates, colleagues, etc. on Christmas, birthdays, etc. USB POWEREDThe heating slipper is powered by USB port, it can be easily connected to power bank, computer, power adapter, car charger, etc, plug and play, 5V low voltage heating, safe and convenient to use. FAST HEAT UPThere is a heating pad inside the slippers, which heats up quickly in about 30s and has a constant temperature. The high-density short plush fabric keeps the heat inside, keeping your feet warm for a longer time. Material: velvet + non-slip cloth, voltage 5V, current 2A, rated power 10W; The length is about 27.5cm, suitable for feet within 43cm, take out the heating pad with an invisible zipper to clean the slippers; Power supply from USB port, heating within 30s, constant temperature at 48 degrees.