The type of travelling keyboard that is already out of date is the rubber roll-up piano. The roll-up first came out of Japan at least 2 decades ago. They were not touch sensitive and to this day still not touch sensitive. You find many people buying a roll-up and posting review videos online like it's a novelty product. It's ok as a toy but for serious playing is problematic when it's not touch sensitive and don't allow the use of a sustain pedal.

    thepianoplayer416 The type of travelling keyboard that is already out of date is the rubber roll-up piano.

    I bought one. Three keys didn't work. I got my money back and didn't have to return the "piano". However, I have never ever used it. Instead, I have a travel controller. It is very strange to hear it make the same beautiful sounds as my VPC1! 😆

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    ... feeling like the pianist on the Titanic ...

      About 3 years ago after I got the earlier version of the Folding Piano 88, I came across this troubleshooter's guide video probably posted by a company rep or insider:

      Item #2 caught my attention. The company admitted that each key is nothing more than a plastic cover snapped onto a metal piece that can come off easily.
      #3 the hinges that lock in place enable you to fold & unfold the piano. However, the separate pieces are not made to lock tightly that would allow you to put the keyboard on a folding stand without having a board underneath.
      The other item #4 the foot pedal does work properly and good for beginners. According to some people who reviewed the product, the pedal unit does not support half pedaling. You'd press it all the way down to get the effect of the full sustain but nothing in between.

      The Folding Piano 88 does everything as labelled on the box but don't expect any more out of a keyboard that costs less than $200.