This is sweater in classic gray. I view sweaters like this as the century version of the gray flannel suit. A good cardigan or jacket or top coat in gray makes a nice impression and I think a professional one, even in a casual crowd without being stuffy.
Adidas Gazelle OG - Newest style of Gaselle basically a 'slimline' version of the standard Gazelle. My girlfriend has a pair of these in Navy and they look proper smart, so a great option for girls too - Hopefully get myself a pair of standard or OG's myself in the future though