The one pair that gets you from the train to the boardroom

Quick answer: Buy a plain-toe or cap-toe derby in dark brown (black if your office is formal), with a thin rubber sole and a stitched construction a cobbler can resole. Rotate it with a second pair so each one rests a day.

The floor decides

Start with the worst surface on your commute. It's not the sidewalk or the rain. It's the polished stone lobby of the office building at 8:55 a.m., after you've walked through a puddle.

Leather soles on wet marble behave like hockey skates. If you've ever crossed that lobby with your arms slightly out and a fixed smile, you know. A rubber sole grips the lobby, the subway stairs and the crosswalk paint. It also holds up better to a mile and a half of pavement, and it keeps water from soaking through to your sock.

Look for a thin, low-profile rubber sole. A studded style like Dainite, or a flat commando sole, keeps the shoe looking like a dress shoe rather than a work boot. Avoid the thick, chunky lug soles. Those say "I'm about to hike to the meeting."

The trade-off is real. Leather soles look sleeker, flex more easily and age beautifully. If you drive door to door, buy them and enjoy them. If you walk, stand on a platform or cross a plaza, you're paying for looks with your balance.

The shape that survives every room

Pick a derby, where the laces sit on top of the shoe, or a cap-toe oxford if your office wears suits daily. Round to slightly almond toe. No pointed toe, no square toe, no big brogue pattern across the front, no contrast stitching.

That plainness is the whole point. A plain shoe in a dark color reads as correct next to a suit, chinos or dark jeans. A shoe with a statement gets noticed in one room and mocked in the next.

Color matters more than people admit:

• Dark brown goes with navy, gray, charcoal, olive and most denim. It's the right first pair for nearly everyone.
• Black is for conservative fields, funerals and the occasional black-tie invitation. It looks wrong with tan or olive.
• Burgundy and tan are second-pair shoes. Wait.

If you own one suit and are still building the rest, the shoe should match it. Our piece on the one suit to buy when you own none covers what to put the shoe under.

Why not the dress sneaker?

Because it's a compromise that disappoints in both directions.

A clean leather sneaker is fine in an office where the dress code is flexible, and plenty are. Our guide to dressing for an office that never tells you what to wear covers how to read that room. But put the same sneaker with a jacket at a client conference, and you'll feel it every time you look down. The room is dressed one level higher than your feet.

A derby rarely makes that mistake in reverse. It's hard to be overdressed by a plain leather shoe with a rubber sole. Worn with dark jeans and a sweater, it still looks right.

Make it comfortable before it matters

The commute does the breaking in. That's good news and bad news.

Buy shoes in the late afternoon, when your feet have swelled to their daily maximum. Wear the socks you'll actually wear to work. Your heel shouldn't slip when you walk, and your toes shouldn't touch the front when you go downhill. Check both feet, since most people have one bigger than the other, and fit the bigger one.

Then wear them at home for a few evenings. Don't make your first walk in a new pair the one before an interview or a presentation. Stiff leather punishes the heel and the side of the foot for the first week or two.

Wear mid-calf, dark, mid-weight socks, so your pant leg never rides up and flashes a bare shin when you sit down. That's a small detail, and it's the one people remember.

Two pairs beat one

The pair that "goes everywhere" shouldn't be worn every day. Leather absorbs sweat from your foot, and it needs about 24 hours to dry out. Wear one pair daily and the leather breaks down, the lining wears through and the shape collapses.

Own two similar pairs and alternate them. They don't have to match. A dark brown derby and a black one, or a derby and a Chelsea boot, will do.

After each wear:

• Put in cedar shoe trees. They hold the shape and pull out moisture.
• Brush off the dirt with a horsehair brush.
• Polish every few wears. A cream polish in the right color takes five minutes.

If they get soaked, stuff them with newspaper, replace it when it's damp, and let them dry at room temperature. A radiator or a hairdryer cracks the leather. Our piece on getting to work dry when the weather turns has more on what to wear in the rain.

Keep a soft cloth in your desk drawer. Thirty seconds at the door wipes off the commute, and the shoe walks into the conference room looking like you meant it.

Buy for the second life

Look at the way the sole is attached. Cheap shoes are glued, and when the sole wears through, the shoe is finished. Better shoes are stitched, with a Goodyear welt or a similar construction, so a cobbler can replace the sole and keep the upper going for years.

That changes the math. A shoe you can resole is one you buy once and repair twice. Ask the shop what construction it is. If the answer is a shrug, you have your answer.

Take the shoe to a cobbler before the sole is gone. Resoling a worn-through pair is harder and costs more than one that's just thin.

What you're really buying

Nobody remembers shoes from a meeting. They remember the man who was limping, sliding across the lobby or tracking mud into the boardroom.

Buy the plain pair, the one that grips and takes polish. Then forget about it and go close the deal.