I've had one I've used for a number of years. At just under 5' tall, I sometimes suffered from sciatic pain in the back of my knees from the pressure since I couldn't rest my feet flat on the floor. This definitely is just enough height (carry-ons were too high) to give me some comfort, and it does fold away nicely. You do get a few odd looks as you're getting it out and setting up, but I no longer care about such things.