As a business traveler, I had an odd assortment of 2nd rate bags in a variety of sizes.  My goal was to replace them with as few good bags as possible and i decided on Briggs and Riley after much research. The 21"  One Touch is very versatile because it expands about another third in size.  It is a little heavy due to the one touch mechanism but I flew with it fully packed this week and was able to lift it over my head to stow it on the plane with no trouble. I stowed it on a variety of planes and it had to be put in sideways on the regional planes, which is understandable.  On two non regional flights, it didn't stow feet in 1st so the feet make it a little too long  on some airlines.  What I found out on the last leg of my trip is that it may fit handle in 1st due to the shape of the storage bins but I didn't have the opportunity to try it. Since my husband travels too, I purchased a 20" wide expandable as an alternative.  Although it's not a one touch, it expands.quite a bit and is lighter -- with about the same amount of packing space and better stowability. The quality and features In both are excellent and they are easy to maneuver. The stretchy, mesh panels are the best I've seen for holding things in place and the bag has a vinyl lined snap in bag that is perfect for storing your 1 qt bag of liquids after going through security. Note: the advantage of the one touch vs the typical expandable is it can be expanded empty so you can put crushable items in it without worry etc.  The typical zipper expandable has to be filled with items to expand fAmazon service's service was excellent.