The high chair height adjusts with a button on the base that you push with your foot. (thespruce.com)
How to find your ideal chair height: For best results, your thighs should be parallel to the ground when sitting and your knees should be at a 90 - degree angle. (makeuseof.com)
For starters, the seat is at standard chair height and does not require a complicated movement to get onto and off of. (treehugger.com)