Review on 🪑 Studico Teenagers' Adjustable Wobble Chair – Active Kids Chair for Flexibility and Posture Correction – Age Range 12-18y – Height Adjustable from 16.65" to 23.75" – Ideal for Flexible Seating Classroom – Blue by Michelle Podraza

However this is a great concept and they come assembled. I bought 2 and both started to break down after about 4 days of light use with kids under 80lbs who DO NOT have ADHD. I can only imagine how long they will last with intense shaking, maybe 1 day?. The basic design is very imperfect. I should have considered the reviewer who said that. There are screws in the base and it looks like they popped out separately from the bar that goes to the seat. The base detaches from the top very easily. You need a metal rod inside or something like that. Although the concept is great and they are comfortable, don't hesitate. Don't waste money. I was offered a replacement for the first broken one, but before that came the second broken one. Send all 3 back.