1. Stability and safety: heating is stable to ensure safety. Washable and reusable, can be cleaned by heating.
2. Compact and portable: being so mini and light-weight, this product does not take much space and can be easily taken away.
3. Durable material: This product is made of high-quality material, durable, long service time, firm and stable in use.
4. Safe and reliable: output voltage of USB interface is only 5V, and two output voltages of voltage regulating device are 36V lower than safety voltage of human body.
5. Easy to use: insert it into shoe, connect it to power source, and enjoy warmth.
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