Black Friday can be a phenomenal opportunity to get great discounts on your must-have items. But it can also be a massive undertaking that will make you miserable if you do not plan well and wear the proper attire. If you want to get the best Black Friday deals and be able to enjoy them, take some notes on some essential yet often forgotten fashion DOs and DON’Ts.

Yes- Wear on Black Friday
Certain fashion standbys will always serve you well in a fast-moving, high-intensity environment like a mall on Black Friday.

You need good shoes to last you all day, and you can’t really go wrong with tennis shoes. Your favorite pair of trainers are the end all answer to your Black Friday footwear woes. They’re already broken in, they give you coverage against both the elements and stomp-friendly shoppers, and they have the soles and insoles to support your feet for hours. This isn’t the time to go out and purchase a brand new pair of Black Friday shoes; this is the time to bust out that old pair of sneakers and give them one last shot at bargain hunting glory.

Practical Outerwear
Wear layers, and lots of them if you live in a cold area. This is especially essential if you plan to get up early and wait outside in frigid lines for a pre-dawn store opening. If your area might get snow, you had better wear a snow coat. Avoid everything from a bad cold to hypothermia by dressing with a little common sense.

Comfy Pants
You will be wearing your Black Friday clothes for a while, so be comfortable. Broken in jeans or hole-free sweat pants will work best for your shopping tasks. You can move, you are covered, and you still look decent (probably a sight better than the whole lot of impractically dressed shoppers who sacrifice function for fashion).

No- Wear on Black Friday
Some people think that Black Friday is a day to make a fashion statement. You can usually spot them wearing impractical clothing and lagging behind the crowd because their fashionista flair has kept them from getting to the good deals first.

Do not, under any circumstances, wear heels to go shopping on Black Friday. Heels are precarious under the most ideal of circumstances; throwing them on to go outside in bad weather, with thick crowds, on slick trampled floors is simply not a good idea. The money you’d save on Black Friday is not enough to pay for a broken ankle, so don’t risk it.

Jeggings & Tights
Jeggings don’t even look like jeans, and they certainly won’t keep you anywhere near as warm. Leggings are ineffectual when it comes to insulating your legs, and they look absolutely horrific if they get torn. A run in a pair of tights can shift from a tiny hole to a leg-stretching street-walker-worthy snag. Be comfortable and tasteful with a decent pair of pants.

Guest post by Analise Marcus, savvy Black Friday deal shopper and fashion-judging people watcher.