![Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian](https://i.guim.co.uk/img/media/0270bdd4608c91dd330b91b1ef8f8eaf65c93b37/355_972_4333_2600/master/4333.jpg?width=460&quality=85&auto=format&fit=max&s=b40c510b4efdd5db16f0c54a0a55a660)
Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian
![Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian](https://i.guim.co.uk/img/media/8dd989f70bc471a8dd2970d87c5338501bb88af1/142_217_3250_1951/500.jpg?quality=85&auto=format&fit=max&s=28a889d4d4f52611f78c12318ab40c74)
Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian
![Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian](https://i.guim.co.uk/img/media/f5670c6db81bb06a5192775ad68df5503dafde3e/1191_273_2309_1386/master/2309.jpg?width=1200&height=900&quality=85&auto=format&fit=crop&s=3d3d5104fecad732c750effdfeedfa85)
Controversial Nike Vaporflys to escape ban but running shoe rules will tighten | Athletics | The Guardian
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