The boot-shaped design can warm the whole pair of feet. This can lock in heat and increase blood circulation, making the feet warm quickly. And the part of the boots has been reinforced. It will not cause it to slowly collapse or slip off, preventing cold air from entering the foot. The size is 40*40cm, easy to wear without restriction, suitable for men and women. You can freely choose according to the environment, temperature and your personal preferences. Plug in the power supply, it only takes 30S to heat up quickly and warm your feet. This winter, you need an electric heating boot to warm your lovely feet. You can adjust the time according to your needs, which will make the use of warming boots safer. We use an advanced controller with overheat and short circuit protection, it will automatically shut down after the set time is up, effectively avoiding burns and fire accidents. And the controller has passed UL certification, which makes you more assured, safer and more convenient to use. The foot warmer is made of high-quality and soft fabric, which is smooth to the touch, more effective in keeping warm, and longer lasting. The lined foot cover can be removed and washed to keep it clean at all times. The lining can be hand-washed or machine-clear, whatever you want. Note: The overall foot pad cannot be clear, only the inner lining can be removed to make it clear! The improved PTC heating pad has better heating effect and more durable. Compared with dry heating, air-conditioning noise, and amazing electricity costs, foot warmers have obvious advantages. No noise, energy saving, power saving and environmental protection. Foot warmers can be widely used in various scenes, durable and provide you with warmth.