I saw similar ones on vacation in a hotel, albeit more of a "beach" type, and also in some offices. The feature of such a chair is in the back, which is made so wavy, not only to somehow stand out. If you lean on it, the back bends are repeated, the back gets support, the muscles relax, the load decreases. This is what I read from the description) According to my own feelings: after several hours in the chair you feel comfortable. I will not talk about "the back has a rest", but there are no negative consequences, as from bad furniture. The build quality is good, my weight withstands perfectly and without dissatisfied squeaks. Bought for home, we don't have one at work.
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