Male Fashion Advice

If you want to search for alternatives, it's a faux-shearling or "sherpa"-lined parka. Many of the cheap ones are only lined in the hood or on the collar, though, which... sucks. True shearling is a leather product, it'll probably cost more than this secondhand, so don't worry about that.

Carhartt on Amazon: https://www.amazon.com/Carhartt-Relaxed-Washed-Sherpa-Lined-Jacket/dp/B08BG7YZ86/ref=sr_1_5?keywords=sherpa+lined+coat+mens&qid=1697033643&sr=8-5

Levi's does sherpa-lined trucker jackets for relatively cheap: https://www.nordstrom.com/s/levis-high-pile-fleece-trim-trucker-jacket/6473661?origin=keywordsearch-personalizedsort&breadcrumb=Home%2FAll%20Results&color=200, https://www.nordstrom.com/s/levis-fleece-denim-trucker-jacket/5685556?origin=keywordsearch-personalizedsort&breadcrumb=Home%2FAll%20Results&color=421

field jacket from Levi's: https://www.nordstrom.com/s/levis-corduroy-high-pile-fleece-collar-field-coat/6458314?origin=keywordsearch-personalizedsort&breadcrumb=Home%2FAll%20Results&color=255

shirt jacket from Urban Outfitters: https://www.urbanoutfitters.com/shop/vintage-sherpa-lined-plaid-shirt-jacket?category=SEARCHRESULTS&color=040&searchparams=department%3DMen%26q%3Dsherpa&type=REGULAR&size=L&quantity=1

Oh, and if you're more into the style of the parka shell and don't care as much about shearling... IDK, the north face, alpha industries, uniqlo, abercrombie.