20 oz Tumbler Mockup & Background - find the source

I'm looking for the original source of a 20 oz skinny tumbler mockup and the background image used in the first image of the provided URL. I primarily need the mockup for design purposes.

Url :
https://www.etsy.com/listing/1790667362/cute-pink-christmas-20-oz-skinny-tumbler?click_key=adb366f486b48f266c8ebb246ac6c0560a7dd25f%3A1790667362&click_sum=b16375a0&ref=shop_home_active_1

Key Requirements:
- Locate the original source of the tumbler mockup and the background image
- Provide a high-resolution version of the background image
- Provide a Photoshop file format of the tumbler mockup (smart object)
- Critical details needed for the tumbler mockup: file format and resolution

Ideal Skills:
- Proficiency in graphic design
- Experience with sourcing design materials
- Understanding of mockup specifications