I have one son who is 1st grade of elementary school.
Naturally he needed a desk and chair to study at home.
When I search for any good chair for him, the balance
chair was found by chance.
According to the explanation on the site, even if
children have continued to sit for a long time,
tiredness is not felt due to the mechanism.
Children can keep a good position of their back
bone.
Unfortunately most of shops sell the chair with the same
price. It seems that we cannot expect to have any good
discount for a while. Anyway, my son doesn't have any
complaint. I hope the logic is right.