You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Size: L/XL/2XL/3XL, Anti water splashing and Prevent cold, Other Size: ID: 1379151 (S / M / 4XL), Fever Area: Back + Cervical Spine, Function: Keep warm, please pick this link to buy: â–ºsize, Power Supply: 5V/2A Portable Source (Not Included), Power Supply Interface: USB, Color: Black, Age Of Application: Adult Men
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($37.95): BGSCM11
2. ($40.54): BG589b2e
apply code in your basket (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/5cd
Old coupons (from the oldest to the newest): AMPrime01, Automo, BGMOTOWC2, ea1da3, BgAuMotor, BGAutos, bGhOnEy10, BGCARELEC, BGINMO, 7d18f7, BGAFF10OFF, BGCuponation10, 13f142, BG10OFFAFF, BGwhielabel, BG10OFFAFF1, BANGGOODSD, 2022ACTIESNL, BG00c906, Terence, Tabby20, 2203ActiesNL, BG1efeb0, 8Couponsde, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5, BGAUTO22, BGdcbfa8, BG8ReviTrage, Cuponation9, BG1b4e97, BGSCM75
(probably won’t work, but you can try them out)
Price history and price alert
Here is price history (for all/most countries) for Men USB Heated Warm Hooded Winter Jacket.
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)).