A varsity jacket and a crew-neck t-shirt are a nice combo to keep in your current casual repertoire. This outfit is rounded off wonderfully with black suede lace-up flat boots.
Varsity Jacket with Crew-neck T-shirt Relaxed Warm Weather Outfits For Women
If you put function above all, this combo of a varsity jacket and a crew-neck t-shirt is your go-to. You could perhaps get a little creative in the footwear department and complement your look with black rain boots.