Warning: Brand: HSY SHOP. Sold by HSY SHOP and Fulfilled by Amazon from outside Canada. What will happen to you when buying products from other merchants?1. The product will be Inaccurate website description, Style not as expected, Too large, Too small and Defective item2. You will not be able to return the goods for a refund.3. Thank you for choosing HSY SHOP. Please buy the correct product! HSY SHOP Electric Heated Pants, Black Fleece USB Charging Heating Sweatpant Washable Winter Warm Trouser for Men Hiking Outdoor Work( Battery Pack not Included) The far infrared ray heating physiotherapy: far infrared ray light wave can direct to the body damaged tissue, the promotion body blood micro-circulation, the enhancement metabolism, may effectively. Long press the switch button for 3 seconds to turn it on/down, short press the button to switch mode: Red Light - highest temp (65°C) White Light- medium temp (55°C) Blue Light - lowest temp(45°C)Nots:1. When you use the washing machine to wash these heat- producing clothes, you need to put it in the laundry bag. And Prevent clothes from deforming, fraying, aging, and entanglement of built- in wires.2. This heated pants is not a rechargeable model. Our Heated pants working must plug- in with a battery; Once plug- off it would cool down soon.3. The electric heating pants does not come with a power bank or battery but included a USB plug and can be used with most power banks on the market. The heated pants is a Unique Present to Men or male friends. The best gift for parents, grandparents, is the best choice for Christmas gifts.