Only used for one work trip. Really nice bag just don’t use it often enough. The trolley pass through is the zippered area in the photo. It can be used as a pocket or unzipped to go over the suitcase handle. Note: this color is currently sold out on the BEIS website From the site: Made with our new, sleek nylon and classic vegan leather, this is the perfect everyday tote for your commute and beyond. It combines travel-focused details like metal feet and a trolley pass-through with versatile features (we love being able to adjust and remove the additional strap), fits up to a 13" laptop and — of course — a key leash. Slip your phone in the hidden cell pocket, snap close the magnetic compartments for extra security, and queue your commute playlist. A tote that combines minimal style with maximum function? All aboard.