Not all plaid shirts are flannel. Not all flannel shirts have a plaid pattern. (WHAT?) Here's how to finally tell the difference between flannel vs plaid!
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Burberry Red Mixed plaid buffalo check shirt - Boys tops & t-shirts
This Flannel shirt by The Real McCoy's is a faithful reproduction of a mid-century era work shirt style flannel. Constructed from a 100% cotton,
The Real McCoy's 8HU Multicolor Check Flannel Shirt – Frans Boone
Kevlar Motorcycle Flannel, Bohn Body Armor
Gingham Shirts vs Plaid Shirts - What You Need to Know – Nimble Made
What is the difference between a shirt and a flannel shirt? - Quora
Sewing with Plaids and Checks - Fit For Art Patterns
The Difference Between Flannel and Plaid
Ladies Shirts, Deus Ex Machina