When I first started thinking about packing for vacations, the number of underwear pairs was always something I overestimated. Over time, I realized that bringing around four pairs is actually quite practical. Here's why: during most trips, especially short to medium length ones, you can reliably wear each pair multiple times, depending on your activities and access to laundry. For example, if you’re traveling somewhere with good hotel facilities or access to laundromats, packing minimal underwear helps save space and reduce weight in your luggage. Even when on the go, freshening up with quick washes in a sink overnight allows you to reuse them comfortably. Additionally, focusing on versatile and quick-dry underwear makes this approach easier. I tend to select lightweight, breathable fabrics that dry fast and stay comfortable. This way, you can keep packing light without sacrificing hygiene or comfort. Of course, your exact needs may vary depending on trip length, climate, and personal hygiene preferences, but four pairs are a great starting point. This number encourages travelers to plan smarter around laundry opportunities while boosting packing efficiency for a less bulky and more organized suitcase. So next time you prepare for vacation, try limiting yourself to four pairs of underwear and see how it makes your overall packing simpler and your travel experience more streamlined.