Form and function: that's the goal when it comes to layering pieces, right? And these zip-collar sweatshirts and sweaters personify that ethos perfectly. Call them a half-zip or a quarter-zip—just give one a try. While the old school style seemed to fade into the background as hoodies reigned supreme, they're now back in a big way.

Think of it like this: These pullovers have the ease of a crewneck sweatshirt, the put-together vibes of a knit polo, and the cozy sophistication of a proper cardigan. And stylish guys have pulled them out of retirement and reclaimed them from the stodgy “business casual” types. How? By pairing them with wide-leg chinos, workwear pants, high-waisted wool trousers and even worn-in jeans.

Depending on the fabrication—these can be knit from merino and cashmere or cut from rugged French terry—they can give off a sporty vibe when worn with Dad sneakers or an old-money, stealth-wealth air that looks great with some boots or loafers. Grab one for yourself and you'll soon find that you get a lot of wear out it because it's the kind of piece that allows you to look cool but stay warm—a versatile staple that can be pulled over a tucked-in button down shirt or your favorite beat-up tee. As for whether to go basic neutral or invest in a more stand-out color, well, that's up to you.