Choosing a Travel Bag
The bag is not the most important part of one-bag travel. The approach is. Pack what you need, know that laundry exists, and leave your fears at home.
That said, the right bag makes everything easier. Here is how to find it.
What you actually need
Most people start by looking at bags. Start with your stuff instead.
Create an inventory. Write down what you actually need for a trip. Be honest. You need fewer clothes than you think. Laundry happens everywhere.
Gather your gear. Pull everything together physically. Lay it out. Remove things you added "just in case."
Measure the volume. Put your stuff in a box or bag with known dimensions. This is your baseline. A 25L of actual gear probably fits in a 30-35L bag with room to spare.
This prevents the common mistake of buying a bag and then filling it because the space exists.
Understand airline limits
If you fly, airline restrictions matter. The onebag dataset shows which bags comply with which airlines based on their stated carry-on dimensions.
General guidance:
- Under 35L fits most airlines comfortably as a carry-on
- Under 20L qualifies as a personal item on most carriers
- Over 40L will get measured on strict airlines
Budget carriers (Ryanair, Spirit, EasyJet) are the strictest. If you fly these regularly, check the airlines dataset for specific limits. Size your bag accordingly.
Key features to consider
Once you know your size range, filter by features that matter to you:
Opening style - Clamshell (full front opening) makes packing easier but adds weight. Top-loading is lighter but less convenient. Panel loaders split the difference.
Laptop compartment - Most travel bags have one. Check the max laptop size and whether it has dedicated access from outside.
Hip belt - Transfers weight to your hips on longer carries. Some bags have removable belts. Some have none. If you walk long distances with your bag, this matters.
Water bottle pockets - External pockets keep bottles accessible without opening the bag. Not all bags have them.
Compression and expansion - Compression straps cinch down a partially full bag. Expansion zippers add capacity when needed. Both add versatility.
Lash points - External attachment points for gear. Useful if you carry things outside the bag.
The onebag dataset includes all these features for filtering.
Try before you buy
Bags feel different on your body. If possible:
- Order from retailers with good return policies
- Load the bag with your actual gear before deciding
- Walk around for 30 minutes
- Check for hot spots and discomfort
A bag that looks perfect online might not fit your torso or carry style.
The bag is secondary
One-bag travel works because you bring less, not because you have a specific bag. People travel for months with bags that "experts" would reject.
Use the filters here to narrow your options. Read what other travelers say in the mentions dataset. Then pick something reasonable and go.
The best bag is the one you actually take.