My measurements:
Outside: 26.5x18.5x10.5
Inside: 22.5x17.5x9
9.8 pounds

I had liked the&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Victorinox-Luggage-Werks-Traveler-4-0-Ultra-Light-Carry-On-Bag/dp/B004MKLU6C/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Victorinox Luggage Werks Traveler 4.0 Ultra-Light Carry-On Bag</a>&nbsp;so much I decided to buy the 24 inch version to replace a 25 inch "Chaps" bag whose trolley handle broke after just a few trips. The 24 inch Victorinox shares many features of its smaller brother, including high-quality construction with sturdy zippers, protected seams and easy-gliding wheels. It also shares the two-piece strap system that can be used to attach a second or even third bag - I used this to secure my briefcase on top while I wheeled it through the airport. And the interior is nicely shaped, allowing you to use every available cubic inch.

There are a couple of differences, other than size.  The first is that this 24-inch has a zipper-expandable gusset to add another inch or so of depth. Another is that the telescoping T handle does not have a zippered cover protecting it when closed, though it did not seem to open accidentally during its travels. I like that the T-handle swivels and that it is just one bar down the middle of the bag rather than two.

Inside is a folding "suit carrier" which led to some head-scratching until I figured out exactly how it was supposed to go in. (Of course, I had neglected to note how it was attached before taking it off!) It folds in thirds and can accommodate longer clothes - an adjustable strap holds it in place on the lid.  A non-removable zippered mesh flap pocket is on one side of the interior, and the lid has a mesh cover to hold more things.  One keyed TSA lock is included, and all of the zipper pulls are metal and can be locked.

I took the 24-incher on a week business trip and it worked very well. It showed no damage at all from the airline. Victorinox even guarantees against damage caused by airlines! I expect to use this bag a lot.