If you’re packing for Park City and wondering what to wear, start with this: a really good jacket.

Then build an outfit underneath it that still works when the jacket comes off. And goes back on. And comes off again.

Welcome to the unofficial dress code.

Function first. Style follows.

Park City style has a practical streak. You might start the morning scraping frost off your windshield, eat lunch on a sunny patio and find yourself in a snow flurry before dinner. Your outfit needs a little range.

Think layers, fabrics that move and pieces you can comfortably spend the day in. Elevated basics. A great sweater. A jacket that earns its closet space. Something warm you can peel off without needing an entirely new outfit underneath.

The goal is to look pulled together while being prepared for whatever the afternoon decides to do.

Yes, the leggings are fine.

Athleisure is completely acceptable here. Performance fabrics are normal. Someone in trail shoes and a technical jacket may have just come down from the mountain, be heading up the mountain or simply be picking up groceries.

All three make sense.

You don’t need to dress like you’re about to summit something, but you also don’t need to apologize for wearing clothes you can move in. A clean, well-fitting combination goes a long way.

Dressing up is in the details.

Want to take things up a level? Add a designer accessory. A beautiful bag, great sunglasses or a favorite piece of jewelry can do plenty with a simple outfit.

There’s room for fashion here. It just tends to come with a practical shoe.

For dinner, think great denim, a beautiful knit, boots and a coat you actually want to wear outside. A little texture, a good silhouette, one standout detail. Less is more.

And before committing to the shoes, consider the walk from the car. An icy sidewalk has a way of editing an outfit.

Your jacket gets top billing.

In some places, outerwear is the thing you take off before anyone sees your outfit. Here, it’s often the thing people see most.

Choose accordingly.

A great puffer, a tailored wool coat or a technical shell can each have a place, depending on the day. The best one is the one that lets you enjoy being outside without spending the entire time discussing how cold you are.

Bonus points for pockets. You’ll use them.

A friendly heads-up about fur.

If you’re wearing fur, you’re probably giving yourself away as a visitor.

No judgment. It just reads a little more “I packed for a mountain vacation” than “I live here.”

The local version of luxury tends to be quieter: beautiful fabrics, useful pieces and a jacket that has seen more than the inside of a hotel lobby.

Leave room for another layer.

You can absolutely have personal style in Park City. Wear the beautiful coat. Carry the great bag. Have fun with it.

Just leave yourself the option to get warmer, get comfortable or say yes when lunch turns into a walk.

That’s the real dress code: look good, feel comfortable, and don’t let your outfit get in the way of a good afternoon.

And if you’re wondering whether to bring another layer, the answer is almost always yes.