High chair for 5 year old?

[HarleyQuinneee]

Am looking to buy a (used) high chair for my friends son for when I babysit him. He's 5 and has CP. So he needs to fit in easily and have the removal tray rather than the pull down one.

Any ideas?

I'm desperately seeking similar fir my very tall and very hyper 4 year old!

How much sport does he need? Wondering if something like the Tripp trapped chair might work. Our Occupational Therapist recommended using it with the high back Baby set for a bit extra support. It has very little side support though. No tray, you need to use it at a table.

The original ones are not particularly cheep, even second hand but will last for ever (can be used comfortably by adults). Cheeper versions seem to have lower weight limits but are still pretty adjustable and some do have trays.