I chang it to 5 stars. Seller sent me replacement very quick after I reported defective chair. Thank you! 
This is original review: Chairs are nice and stylish. One chair seems be cut by some sharp edge thing , then someone stick it together by kind of tape. I am not sure how long this chair is going to last.  I have to use it when I got it. Because I need to put in my apartment for running Airbnb ASAP.  Whatever reason it is,  this kind of defect product shouldn’t be sent to customer.