My long flannel is on lightning deal at Amazon! I love this one because I can wear the sides up or down and it’s long enough to wear with leggings. It’s on the thicker side too, so it’s pretty warm. (commissioned link) Thanks, Simply Becca!

Flannel — https://amzn.to/3BQFgRb
Long tank, similar — https://shopstyle.it/l/bz21e
Leggings — https://amzn.to/3mPnycC