The changing seasons and falling leaves are a great time to ponder life's great questions.
"Is it a shirt or is it a jacket?" is not one of those great questions.
But still, the beguiling overshirt, shirt jacket or shacket, if you're into portmanteaus, should be a go-to option for staying just the right amount of warm throughout fall and winter.
These are 10 shirt jackets for your consideration. Wear them, layer them, love them.
Merge some autumnal plaid with a name like Blanket Shirt Jacket, and you just know you're going to be cozier than the next guy. Outerknown, $188
Reach for this cotton-linen blend option for warmth and comfort all day long. Throw it over a button-down, and you'll look better than you have to. Peter Millar, $198
Step 1) Put on this broken-in corduroy overshirt. Step 2) Jump into the nearest pile of leaves. Congratulations on achieving peak fall. Marine Layer, $145
With a rugged cotton suede exterior and soft, flannel-lined interior, it's a real business on the outside, party on the inside situation. Legendary Whitetails, $80
Made from eight-ounce heavy cotton twill, this durable option can go from the couch to an impromptu game of flag football. Everlane, $78
Filson makes more than just great duffels. They also make shirts, including this heavyweight wool number that's engineered to protect you from the elements. Filson, $295
This wool-cotton chore coat is part shirt, part jacket and part sweater. That's the kind of three-in-one value we can appreciate. Madewell, $185
This boiled wool shacket has two front patch pockets and one interior pocket for hiding a flask. Or your wallet. Or whatever else might require pockets. Taylor Stitch, $148
Inspired by the military's Chief Petty Officer jacket, here's a tried-and-true shacket that never goes out of style. It's tough, versatile and ready for anything. Flint and Tinder, $148
This mid-weight option will fit over your henley or under your jacket, and its tough, stretchy, water-resistant fabric will keep you dry during unexpected showers. Topo Designs, $129