Recently purchased a Rimowa Cabin Plus. Flew from Houston to Indianapolis on United via Mesa airlines on on an Embraer 175. Suitcase fit directly into the larger overhead. Slid in wheels first with ease. Perfect fit. Had also purchased the Rimowa Cabin and used it on a flight 2 weeks prior and found the size of the Cabin Plus better suited to my needs and returned the Cabin after I realized the Cabin Plus would fit on the smaller planes. Had ordered my wife a Rimowa Cabin S (by accident) and it’s way too small. I returned for her a titanium Cabin Plus.