Samsonite underseat carryon spinner looks like it fits the bill? https://www.amazon.com/Samsonite-Underseat-Spinner-Port-Black/dp/B07H8SWKPC/ref=mp_s_a_1_3?adgrpid=97409065379&hvadid=421570974391&hvdev=m&hvlocphy=9026797&hvnetw=g&hvqmt=b&hvrand=2612350257955734576&hvtargid=kwd-843915745369&hydadcr=29945_12020736&keywords=4%2Bwheel%2Bunderseat%2Bluggage%2Bspinner&qid=1687968768&sr=8-3&th=1&psc=1

If you hadn't said you must have outside pockets, I would have suggested Brookstones smallest spinner, its hardshell small.