Hi @steemit.lover2, This is the most useful hunt I've seen today.

Pros:

i. The chair is designed by a big-time chair designer and a well-credentialed chiropractor,
ii. It helps with back alignment.
iii. It relieves stress and you have less backache during your sleep and thus you have a good sleep.
iv. It's great for desk-jockeys.
v. As far as I know, Justin Bieber never backed such a chair before and he fully supports its claims. There are other celebrities also backing this product.
vi. The price is affordable at this point.

Cons:

i. The new users might take some time to adjust themselves to this new sitting routine as this chair works if only your posture is right.
ii. The product is in crowdfunding stage and once it's in the market, the price might go up because there is lot of demand and some great testimonials increase the chances of this possibility.