schwinn bicycle seat post Air-Dyne Upright Fan Bike & Seat Mount Bracket (MX14 Schwinn classic seat post is roughly 22.2mm in diameter and has thicker walls than a traditional seat post to support the holes in it for use with the Schwinn unicycle frame SCHWINN SEAT POST FITS PHANTOM

You can often find motors, batteries, controllers, wires, throttles, sensors, and other accessories sold separately, but unless you have a few conversions under your belt, youre better off with an all-in-one kit

Carry-On Sized This 40-liter duffel fits most airline carry-on requirements

From what research i've done, EDIT: I think you are right, just made a little discovery

Luggage goes in the overhead compartment since its usually the biggest personal item bag, while your backpack or handbag should fit under the seat in front of you

I fit my entire five-day packing list including sneakers, a sweatshirt, and all my outfits