If your office has a business casual dress code, it's great news for all your "weekend ... swap out this bomber for a blazer (or layer a structured shirt underneath). Tie up the top if you're worried ...
“Business casual attire is a dressed-down but still ... “How you present yourself is very important, so I say always dress up ...
At most companies, however, the "smart casual" dress code is a step up from "business casual," but not as formal as "boardroom attire." It's neat and professional - but still informal.