ECOHUB Personal Item Bag 16'' Small Duffel Bag, Green-2, 18 inch underseat

I had been on the fence about this one due to its plastic clips and not being certain if it would work on Southwest, but it held up great across two airport trips and made life much easier than my previous underseat bag, which only had the main pocket and a document sleeve pocket on the front, with no trolley sleeve or sorting pockets. My suitcase's roller handle measures 14.5cm(5.7in) on the top part and 14cm (5.5in) on the extension that the trolley sleeve hangs onto, which fits snug and tight so it doesn't swing, but can still be placed and removed from the handle pretty quickly for security and plane. The bag arrived folded down but does not sag when in use which is nice, and the pockets have been nice for sorting items I might need during my flight, including the document pockets on both the front and back of the bag.The water bottle pockets on the ends are a little too tight for V8/Gatorades unless the bag is not packed too tightly, but works fine for regular soda and water bottles. The zippers run smoothly with no snags or stubborn parts. The seams look a little stretched on some sections but look like they should hold. Overall, I'm expecting this bag to hold up well for my occasional travel, but I may get some metal replacement pieces to keep on hand should the strapping plastics happen to break on the go, but that is not a high priority to me yet. Good bag, would recommend.

I fly over 100 times a year. This inexpensive bag holds a lot of gear and fits under the seat. The zippers are sturdy and so is the bag itself. It has several compartments I can keep things organized. It had been very durable so far. I have not been gentle with it and it has held up nicely and it still looks nice

This bag is exactly what I was looking for. It is the perfect size for a carry-on and holds a surprising amount. I love the laptop sleeve and how easy it slides on my suitcase handle. I also use it as a gym bag where the shoe bag comes in very handy. Overall very pleased!

Be great for small carryon bag

I liked the size, the way it opened and the side water bottle pockets were ample. What I didn’t like was that it was too sided so there is no support whatsoever. There is also a pocket has that water proof lining which is kind of a sticky rubber, so since that is where I wanted to store my iPad mini, it made it difficult to get it in and out. I plan to cut that lining out so that it is easier to suit to my needs. The other thing that wasn’t ideal was that while it did fit over my luggage handle, once it slid down into position, it moved around and kind of fell off the top of my suitcase which was annoying. I ended up just holding the handle of the bag over the handle of my suitcase and that kept everything in place. I would never buy this again because other than fitting my stuff in it and it being the appropriate size for cheap airlines tight restrictions, it is not easy to use.