Material Cotton / spandex, Name Heated Socks, Heating temperature 40-55℃, Leg sole 21.5-30cm, Height 27-37cm, Battery “2x2200mAh rechargeable lithium battery
(Buitl-in)”, Charging type USB Charging, Charging time 2.5-6 hour, Heating Location Instep & foot bottom, Color Black/Black+gray/Gray+black.
Basically copy coupon, view price history or create e-mail price alert. What is best price?
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BG372cb9, Sports23q1, Sport2023Q1, BGb7fa3b
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Do you need price history chart (for all/most countries) for USB Rechargeable 40-55C Electric Heated Socks? There we go. The lowest price was: $8.93.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).