The term 'Derby' refers to any style of footwear with a 'open' lacing system, where the facings are stitched on top of the vamp meaning they can be opened outwards, as such, are suitable for a wide foot or a foot with a high in-step.
Not just a great looking boot; with its leather patch across the vamp and removable strap to keep the knot secure, biker boots are certainly built for purpose and give an edgy and rugged look to casual outfits.