The same thermal leggings that keep you warm on trails can layer under your city pants if temperatures drop.

Dual-Purpose Footwear: This is where compromises happen. Several commenters recommended approach shoes or trail runners that work for moderate hiking and don't look aggressively outdoorsy in cities.

Brands like Lems, Vivobarefoot, or Allbirds Trail Runners got mentioned as shoes that handle light-to-moderate trails while looking acceptable in casual urban settings. Pair them with one nicer shoe for evenings out.

Strategic Cutting: Experienced one-baggers shared what they actually sacrifice:

- Jeans (too heavy, slow to dry) - replaced with technical pants that work in both contexts - Multiple shoes beyond two pairs maximum - Cotton anything - Dedicated pajamas (sleep in tomorrow's base layer) - More than one or two non-technical clothing items

As one commenter put it: "I bring one nice shirt and one pair of pants that aren't hiking gear. Everything else pulls double duty."

When to Accept You Need a Bigger Bag

Here's where the discussion got honest: some trips genuinely don't fit in one bag if you want to be properly equipped and comfortable.

Several commenters admitted they've moved to 35-40L bags for mixed trips, or acknowledged that a small checked bag sometimes makes sense. If you're doing serious technical hiking followed by business meetings, trying to make it work in 25L creates more stress than it's worth.

"I was trying to keep things simple," the original poster wrote, "but I also don't want to feel underprepared or badly dressed the entire time."

That's the key tension. One-bag travel shouldn't mean feeling inadequately equipped for your actual activities. If that multi-day trek requires crampons and you're also attending a wedding, that's a two-bag trip. That's okay.

The Middle Ground: Strategic Itinerary Design

Some experienced travelers solve the problem by designing itineraries that minimize dramatic wardrobe shifts:

- Do all the outdoor activities first, then transition to cities (so you can ship gear home or leave it somewhere) - Choose cities with good outdoor access so you can day-trip for hiking without packing expedition gear - Rent specialized equipment at outdoor destinations rather than carrying it - Accept that you'll look like a tourist/hiker in cities and that's fine

The Real One-Bag Philosophy

The most useful comment came from a long-time one-bagger: "One-bag isn't about proving you can fit everything in the smallest possible space. It's about packing appropriately for your trip in carry-on sized luggage."

If that means a 40L bag instead of 25L for a mixed itinerary, you're still one-bagging. If it means accepting you'll wear hiking pants in the city, that's the tradeoff. And if it means occasionally checking a bag for trips with genuinely incompatible requirements, that doesn't make you a failure.

The goal is traveling efficiently and comfortably, not adhering to arbitrary size limits that make your trip less enjoyable. Sometimes the one-bag philosophy means accepting that this particular trip needs a different approach.