These chairs are really high quality.  The frame is made of solid wood and the seat cushions are comfy (although they are linen, so the fabric is as scratchy as you'd expect linen to be).  Please note some pics on the Wayfair site don't show the cross bars between the side and front legs.  As you can see in my pic they definitely do have those crossbars and I can't imagine the chairs would be as strong if you chose not to use them.

A few pointers (from someone that assembled 6 of them)...get all of the bolts in and slightly tightened by hand before you tighten them all the way (it makes it much easier to get everything lined up).  I did this in 2 batches (1) bolts between the back of the chair and the seat (2) bolts between the seat and front legs.  The bolts do strip easily if you are using a power tool to tighten them and don't have them perfectly lined up.  Luckily I only did this to one bolt before I learned my lesson and was able to use pliers to tighten it.