Your Minimalist Guide
Mose Hayward
Frequent One-Bagger
I recently took a couple of budget European flights that only allow what they variously call a “personal item”, “cabin bag”, or “underseat bag”. I elected to take the Osprey Transporter Boarding Bag 20L. This weather-proof carry-on shoulder bag held everything I needed for a couple of weeks and kept me organized, without going over the airlines’ stingy size limits.
Traditional daypacks are great for long city walks with their two shoulder straps. But I like an over-the-shoulder boarding bag like this for flights and train rides, as it is easier to pull out a passport, headphones, wallet, or other frequently used items without having to take the bag off one’s back. It also has a luggage sleeve to slide over the handles of a suitcase, if you’re using one.
Osprey’s best option for these types of travel needs is its Transporter Boarding Bag. Here’s a look at the upsides and downsides of this well-built, travel-friendly underseat bag after both my mentioned European jaunt with only this bag as well as a run around South America with it plus a wheeled carry-on, for a total of three months of heavy use.
In a Nutshell: The Osprey Transporter Boarding Bag
As a cabin bag, the Osprey Transporter Boarding Bag 20L is great for protecting and organizing stuff on the go.
Pros
- Sized to be acceptable for most airlines’ underseat bag requirements and if it does go over a bit it can be squished down into a sizer; it’s also large enough to maximize what you can carry within those limits
- Logical organizational pockets and a very large laptop pocket, secure inner storage for valuables
- Comfortably padded carry strap; I wore it over-the-shoulder and enjoyed having it’s smooth forget-about-it presence on my back as well as convenient access to essentials at my side when needed
- Extremely high-quality construction: It’s “waterproof” in the popular sense of the term, with a water-repellent coating that keeps stuff dry even in heavy rains and seems durable enough to last for years.
- Luggage pass-through slot for placing this on top of a rolling suitcase’s handle
Cons
- While this is very reasonably priced for this category, you could go for some cheaper boarding bag (though likely less durable) if you travel infrequently
- Over-the-shoulder carry is very convenient for keeping things at your side but can feel heavy and uneven if worn for hours; I’d instead choose Osprey’s other daypacks that we’ve reviewed if you need to carry a lot of stuff around all day long while visiting the sites on a trip
The Osprey Transporter Boarding Bag 20L comes in a few solid colors and is quite well-priced compared to most Osprey and other bags of similar quality.
Why Use an Over-the-Shoulder Bag as Your Personal Item?
For years I’ve opted for backpacks for travel, especially my favorite wheeled carry-on backpack or, on occasion, a larger (checked) wheeled backpack.
But wheels and backpack straps eat into the bag’s total volume, which is limited when flying personal-item-only.
Backpack straps also put your bag behind you, where your important stuff like your passport, phone, etc. are both less accessible to you when you need them and more accessible to pickpockets. Yes, you can put your backpack on your chest, but packs aren’t designed for that. Wearing your backpack on your front is both uncomfortable and looks dopey.
Thus the shoulder bag. This is a great solution for travel in cities, where you’re likely to take transport and not be walking for extended periods with your luggage—mainly you go from the airport or train station to your lodging with the bag, and back. (I wouldn’t use a shoulder bag as a daypack when wandering a city for extensive periods—although this Osprey option has a well-padded shoulder strap and would make do in a pinch).
A good shoulder bag also carries a surprising amount of gear while maintaining a low profile and minimalist aesthetic.
Key Features of the Osprey Transporter Boarding Bag and How they Affect the Travel Experience
I’ve been reviewing travel luggage for years on this and other sites, but this is the first time I’ve bought and reviewed a bag specifically for the purpose of flying with only an underseat bag. (We generally prefer train travel around here but sometimes flying can’t be easily avoided, for example between Lisbon and Italy.)
Here’s a look at the key features of the Osprey Transporter Boarding Bag 20L and how they have worked out for me so far on a small series of trips around Europe with this as my only bag and in South America with this plus the Osprey Transporter Wheeled Carry-on 38.
Compliance with Airline Limits for Cabin Bags
The bag’s dimensions as measured by Osprey are 31 x 45 x 25 cm / 12.2 x 17.72 x 8.66 in., putting it well within most international size limits for a cabin bag. With a bag, there is some squishiness, so if you don’t fill it all the way it’ll even fit even in airline sizers that are a bit smaller.
The Osprey Transporter Boarding Bag is thus great for taking on flights that limit you to only what they variously call a personal item/boarding bag/cabin bag, or the bag that you put under the seat in front of you. You could also of course most certainly use it as a standard carry-on. It’s unassuming and unlikely to draw scrutiny.
I’ve used Osprey Transporter Boarding Bag as a cabin bag on a handful of different airlines already and have never even been asked to place it in a sizer as it looks small. In particular, I’ve taken the it on two European carriers (Ryanair and Wizz Air) that are finicky and annoying about bag sizes and had no problem, even though technically the sizes as described by Osprey are just slightly over the official stated limit for those. The bag looks small, but even if I had been asked to put it in a sizer, it would certainly squish enough to fit. But both Ryanair and Wizz Air employees just waved me past. I’ve also taken it on Vueling and EasyJet without issue.
The bag fit without issue under the seat in front of me, which is the main point of these restrictions for the airlines.
Durability and Use in Wet Weather
Osprey’s Transporter series of bags is designed to hold up in really rough, wet conditions. I’ve been caught in heavy rains in both Naples, Italy, and in Bogotá, Colombia with the Osprey Transporter Boarding Bag and water ran right off the outside of the bag with my clothes and computer on the inside remaining perfectly dry. It’s also easy to simply wipe off mud and dirt.
So as my personal experience proves, the Osprey Transporter Boarding Bag is waterproof in the popular sense of keeping your stuff dry when you get stuck in a quick downpour. But it is not waterproof in the technical, official sense. If you’re going canoeing or planning on being for extended periods in other very wild and wet conditions, you’ll instead want a bag with an official waterproof IPX6 rating like the Osprey Transporter 25L Roll Top or the completely dunkable IPX7 rating of the Osprey Transporter Waterproof Duffel 40. These are much more expensive, however, and overkill for most general travel use.
The bottom of the Osprey Transporter Boarding Bag is Bluesign-approved 600D recycled polyester, and it’s treated in a way that gives it a shiny look and repels water. The sides and top are 450D recycled polyester. The zippers and stitching appear quite durable. I do wonder if perhaps the coating may eventually scratch or wear down but I’ve seen no indication of this so far in the five months of constant and rough road use—the coating has stayed completely intact.
Osprey is making an effort toward sustainability by using recycled materials and the coating is PFC free—which may be better for our and the planet’s overall long-term health.
Pockets and Other Features
I have used the outside pockets to organize my toiletries, documents, miscellaneous items for my trips, and used three Eagle Creek packing cubes to organize clothes in the main compartment, which was roomy enough for a week’s worth of the basics (seven changes of socks, underwear, and T-shirts, one pair of pants). I also carried my charging cables and universal travel plug adapter. So traveling light with only this bag for a few weeks is doable.
Is the Osprey Transporter Boarding Bag 20L Right for You?
