They said it would be called the Aeronaut 30 and gave the dimensions. Only the dimensions were for a much larger bag. A few people commented on this, the thread was taken down, and put up the next day with the correct dimensions–19.7″ x 12.6″ x 7.9″. Not taking into account any internal dividers or pockets, the bag is about 1960 cu. in or 32 liters. It’s in the ballpark of 30 liters considering we don’t yet know anything about the design.
When I heard the dimensions I immediately thought of the Eagle Creek Adventure Weekender. It’s 20 x 13 x 8. But Eagle Creek claims it holds 2500 cu in/41 liters.
That made no sense. It should be about 2100 cu in and 33 liters. So I wrote to Eagle Creek to find out. This is the response I got:
When it comes to the dimensions of our bags, we measure from the top of the surface (including the pull out handle when it’s not pulled out) down to the very bottom of the wheels. We do this to ensure that the item is within size regulation for a carry on bag through major airlines. The cubic inches provided for our products refer to the actual volume of the item, which is why it would appear that the volume and dimensions don’t correlate to one another.
What? I could understand if the volume was less than the external dimensions, but more? The only way that could happen is if the bag expands quite a bit.
Technically, they aren’t lying because the bag can hold 2500 cu in. But there is no way it can keep its shape doing so.
I checked Tom Bihn’s bags and they are all in line when comparing dimensions and volume. They basically match.
I also looked at the new Patagonia MLC Transport and they don’t even give dimensions, just volume. (By the way, I have this bag and will have a review up in a few days.)
Wheeled bag manufacturers vary when it comes to dimensions. Some give the dimensions that include wheels and handles, and some don’t. The 22″ roller they call a “carry-on” may actually be 24″ and will have to be checked. Technically, if there is one airline somewhere that would allow the bag as a carry-on, it can be labeled carry-on compliant.
So what am I saying….we shouldn’t trust these companies? Absolutely not. They are all fine, reputable and honest companies that have different ways of measuring both dimensions and volume. Rather than accepting what they advertise, get out your tape measure and calculator and determine it for yourself. And just remember, if the volume stated is larger than the volume calculated using the dimensions, we’re talking about an extended/bloated bag.
In regards to the new Tom Bihn Aeronaut 30…..I’ve told you all I know. So far nothing has been made official and it’s too early to know if I’ll be getting one for review.