After just a few days it's too soon to know about durability but I suspect the mesh seat will greatly outlast the usual foam padding that compresses within a few years in most chairs. The mesh is more firm but well shaped for both my wife & I. It's also very cool and breathable if you work in an non air-conditioned office.
It took two tries to obtain this chair at my local store. First time they said it was out of stock. Next day they said someone had not known where to look. I should have bought the assembly. Directions very confusing and in order to get phone support you had to create an account etc. Not friendly. Now once I take out the 6 screws to reverse the two arms which were in no way marked right or left the chair should be fine.
The chair is great - can be adjusted every which was to your comfort. The assemble instructions are very poor - I had to call the manufacturer for assistance.