We haven't used it much yet, but we do love it so far, and the price was right, at $50. It folds up upwards, and fits in my coat closet. When the grandkids come over, it pops open so EASILY, is comfortable, and very handily slides around our kitchen floor smoothly; as in, we'd grab the side while baby was eating to pull him closer or scoot him farther, or turn him toward one of us; a feature that was a pleasant surprise. My daughter commented that she thought in was on wheels! It stays put tho, when you aren't purposely moving it around.
Folds up just as easily as it pops open, effortlessly. The little round segregated removable plate that snaps into the tray is kinda neat, even for toys/balls that he can mess with and move around in it.
I didn't notice in the photos that there is no hard plastic seat back. There is a bar across the top, a plastic seat bottom, and the wipeable fabric is secured very well around the top bar. The child sits very comfortably in this, and it all feels sturdy, so we'll see how it holds up over time and use. I would say it is not as rock solid and bulletproof as those massive immovable $200 highchairs, but for us, that's a fair trade for portability, foldability and price.
It's safe, sturdy, comfy, super functional, doesn't take up a ton of space, lightweight, folds up and tucks away nicely, great price!