Packing is pivotal. Forget an essential item and you’re left disappointed and scrambling to find the nearest store in your destination. Pack too much and you end up disorganized, burdened with heavy bags, and hemorrhaging money to pay for pricey airline baggage fees. So we thought it best to revisit the most basic—and most useful—packing rules. Here are 3 fundamental packing strategies that every traveler should learn.

1. Roll, don’t fold.

Many travel experts—including backpackers, who must stuff months’ worth of clothing into a pack the size of a box of wine—agree that rolling is superior to folding. Tightly rolled clothes take up less space than folded ones. Plus, they’re less prone to getting deep wrinkles from fold creases.

2. Make a packing list

When it comes to packing, procrastinators fall short. Start your packing process days or even weeks ahead of your departure date; this gives you time to craft a complete list, plus purchase any additional items you might need for your vacation. Creating a packing list is a fail-safe way to ensure that you never, ever forget to bring something important.

3. Know your airline’s baggage-fee policy

Figuring out the airlines’ tricky and befuddling baggage-fee policies is key to any budget-minded packing strategy. While most airlines permit travelers to check at least one bag on international flights, the majority of U.S. carriers charge big bucks for bags checked on domestic flights.