Heated Insoles, Outdoor Foot Warmers, USB Heated Shoe Insoles, Camping Heated Insoles, Non-Battery Heated Insoles, Electric Foot Warmer Heating Insoles for Men & Women, Winter, Ski (39-40(USsize8))

• IMPORTANT NOTE: For out-of-home use, you need to connect the power bank. 【Foot Warmer】This insole is figuratively called the "Foot Warmer" because it allows you to enjoy warmth and comfort in cold weather. Whether it's outdoor activities or indoor rest, it can bring you a warm experience. When you need to walk around or stop heating, you can unplug the plug connecting the heating insole, at this time, you can use it as an ordinary insole, which is very convenient. 【USB Interface】This insole can be connected to a power source through a USB interface, which is convenient and fast. You can use devices such as computers and portable power to provide power for it, USB power adapter and charging treasure output power needs to be greater than 5V/1.8A, otherwise the temperature will be low. 【Quikly Heating】The insole is made of soft material, which comfortably fits the soles of the feet and effectively maintains warmth. When the heating function is turned on, the insole will quickly heat up, providing comfortable warmth for your feet. 【Unisex Fit】This insole design is and stylish, suitable for both men and women. Whether you are a boy or a girl, as long as you choose the right size, you can enjoy the comfort and warmth it brings. 【Attention】When not in use, please unplug the power in time to avoid long-term heating. The elderly and children need to be used under supervision. Avoid wearing electric heating insole to do strenuous exercise to protect the heating chip. Heating insoles can be cleaned like ordinary insoles, do not blister for a long time, please be sure to dry when using again.