USB Heated Insole Foot Warmer With Remote Control (Banggood, Aliexpress: Service life: more than 500 cycles, Output: 4.2V-5V, L code: 41-46 Euro code, Input: AC/100-240V / 40-60HZ, Battery capacity: Left: 2100Mah / right: 2100Mah, Voltage: 3.0V-4.2V, Number of codes: , USB charging, M code: 35-40 Euro code (the best price with coupon)).
Check coupons or create price alert down below. Do you want to know what the best price is?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
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.
Link: Banggood product page
1. ($17.99): BGab7c86
2. ($42.49): BG75597c
you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
Old coupons (from the oldest to the newest): BG932cf6
(there’s a little possibility that old coupon will work)
Price history and price alert
Check out price history chart (for all/most countries) for USB Heated Insole Foot Warmer With Remote Control. The lowest price was: $17.99.
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)).