The defining feature of a penny loafer is the leather strap across the vamp. Paraboot interprets the style in both cleaner and sturdier shapes, giving the shoe a wider range of uses than a purely formal loafer.
A sleeker profile works best with tailored trousers and lighter smart-casual outfits. Chunkier shapes suit chinos, corduroy and denim, especially when the rest of the outfit has similar weight and texture.