You will receive a Christmas card as a gift for the Christmas Day! [WIDE APPLICATION]: The 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 MATERIAL]: The 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 GIFT]: In 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 POWERED]: The 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 UP]: There 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.