Material STAINLESS STEEL, Thermal Insulation Performance 6-12 hours, Capacity 400 Ml, Brand KCASA, Color White / Black / Blue / Pink.
Just check coupons out (with price alert and history). Let’s see what best price is ATM.
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 coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Europe 
. This is new product in my database, so I don’t know if this price is good.
Link: Banggood product page
1. ($12.59): BGAFF10OFF
2. ($12.59): BGCuponation10
you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGDETD174, BGDEFO174, BgcLuBofErtA10, BGXIN174, BGJAFO174
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Not enough data to show price history chart… $10.99 is the only recorded price. It was not cheaper than that since we have saved it in DB.
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)).