These aren’t your average flannel shirts. They're thicker and feature a big, bold check that's woven from substantial cotton threads. The plaid is tactile, almost like a tweed—which is what makes this new type of flannel the ideal over shirt. Pull it over a simple T-shirt or even a sweater for an added layer of warmth. Not to mention a shot of rugged winter style. This is the kind of shirt you can wear all season long, dressed up and dressed down. But which one is right for you (and your budget)? Thankfully, we've put a handful to the test to bring you the best for your money.