This one need no mesh. It's just recolours of the *Back to Work* pack.
I do think that a blazer sometimes does complete an outfit better than a top. It adds a touch of style if your Sim's is going out somewhere. I think it may be a finishing touch if your Sim is hosting a small casual get-together in their backyard.
I have all Sims4 expansion and stuff packs installed.
Happy Simming Everyone!