Portable Vector Cup Holder - Clip-on Travel Mug Holder for Airplanes, Cars, Wheelchairs, Desks & Tables | Perfect for Coffee, Tea & Drinks On-The-Go

I bought this specifically for use on airline seats just for the reason the description states... keeping any drink cups/cans secured and not spilling on my laptop as I work. The problem is it's too big. It won't fit in between the tray edge and the window side of the plane, it sticks too far into the area of the center seat to use on either end seats, and too far into the end seats to use on either side if you are in the middle seat, and while it fits on the aisle seat it extends too far into the aisle and flight attendants bang into it with their carts. It's also too big to fit between you and the tray. Essentially useless on an airplane unless you are in an upper class seat or have an empty seat next to you, and then you don't need it. For uses other than airplanes it works great. Sturdy build and securely holds cans, bottle and cups of many sizes.