The Nike Zoom Fly 6 sells for £154.99/ $170/ AU$260, which – and it pains me to say this – is a comparatively affordable price for a running shoe in this category these days.

The Nike Zoom Fly Flyknit is all about race days andperformance. To achieve these goals, Nike has combined its responsive React Foam midsole with its featherweight and breathable Flyknit upper.

Nike’s proposal for these two similar models is that the Zoom Fly can be used for elevated paces and extensive training, while the VaporFly 4% is the shoe to wear on race day.

And unlike Nike's other highly-touted 2017 running shoe, the Vapormax, the Zoom Fly SP is a lot more flattering on actual human feet.