tomtoc 23L-28L Expandable Travel Backpack, Underseat Flight Approved Personal Item for Ryanair Southwest Frontier JetBlue, Lightweight Carry-on Luggage, Water-resistant Business Rucksack Weekender Bag

The Tomtoc Liteway 28L would be excellent! https://a.co/d/0imGFda6 They also make one small enough for international sizers. It's called the T-69. https://a.co/d/0528pfl2

It’s primarily a European thing, but US airlines aren’t that much more relaxed (examples below). The key things to remember are the pros vs cons of personal item. Obviously, the pros are tickets are cheaper and you’re highly unlikely to have to gate check. The cons are you’re more likely to get bumped from a flight if you’re flying solo, basic economy, and without an assigned seat. For me, it’s worth the extra cost to pay for regular economy and an assigned seat to help mitigate the chance of being bumped. But, while certainly not wealthy, I’m in a financial position to make that choice. EDIT: I use the North Face Jester or Osprey 26+6, both are slightly larger than most restrictive personal item sizes. The only time it almost became an issue was on a flight from London to Athens where BA was gate checking all carry ons from a certain boarding group (I think 6?) and higher. Fortunately, I was just below that cutoff. EDIT 2: If you want to try an inexpensive personal item from a relatively reliable company, Tomtoc has a 23-28L expandable bag that’s 40x30x20 in 23L mode for around $70. Sizing comparisons (both cm and in):- Ryanair / Vueling (baseline for most people): 40x30x20 / 15.75”x11.81”x7.87”- British Airways (smaller than Ryanair): 40x30x15 / 15.75”x11.81”x5.9”- United: 43x25x22 / 17”x10”x9”- American / Delta: 45x35x20 / 18”x14”x8”