Oxfords use closed lacing: the quarters are stitched under the vamp, so the facings meet in a neat V. The result is a slimmer throat and a more formal reading than a derby. A casual oxford — the kind YoyooBlue aims for — keeps that clean line but drops the stiff, ceremonial feel.
Look for a leather upper, a last that is not overly pointed, and stitching you can actually see. Pair them with tailored trousers or dark denim; they are less at home with athletic shorts. If you need easier entry or a wider instep, try a derby instead.
More context: Oxford vs Derby and How to wear oxfords casually.