With marathon season upon us, Nike has reworked two of its most popular running silhouettes, including the Zoom Vaporfly 4% and the Zoom Fly. Both models have been updated with an extra focus on performance, including increased durability, and ultra-lightweight, breathable support.

The update of the Zoom Vaporfly 4% is the first time that the silhouette has featured a Flyknit upper, which makes the shoe more breathable and ultra lightweight. The Zoom Fly, on the other hand, also comes with a Flyknit upper, as well as the addition of Nike React foam for a softer run and the same full-length carbon fibre plate as the Zoom Vaporfly 4%. These new features mean that the shoe is more efficient than any of Nike's previous fastest shoes.

Coming to a running track near you this autumn, let us know what you think of Nike's new Zoom Vaporfly 4% and Zoom Fly silhouettes down in the comments section below. In related news, here's your first look at the ACRONYM x Nike Air Presto Mid 'Racer Pink'.

If you're thinking of copping some brand new Nike heat, be sure to check out the latest here!