![Nike Vaporfly running trainer cut in half to show the thick foam and... Stock Footage Video - Getty Images Nike Vaporfly running trainer cut in half to show the thick foam and... Stock Footage Video - Getty Images](https://media.gettyimages.com/id/1203177386/video/nike-vaporfly-running-trainer-cut-in-half-to-show-the-thick-foam-and-carbon-plate-of-the-sole.jpg?s=640x640&k=20&c=ZrocGvQ5BWueToqlyBZhnj090L-cADXxIhH28Ui_caw=)
Nike Vaporfly running trainer cut in half to show the thick foam and... Stock Footage Video - Getty Images
![BBC Sport on Twitter: "🤔 What's the deal with these Nike Vaporfly shoes? 🤔 @samtomharris explains what they are, how they work, and why they have been so controversial... ⬇ https://t.co/exHI8UC9ic" / BBC Sport on Twitter: "🤔 What's the deal with these Nike Vaporfly shoes? 🤔 @samtomharris explains what they are, how they work, and why they have been so controversial... ⬇ https://t.co/exHI8UC9ic" /](https://pbs.twimg.com/amplify_video_thumb/1223663192766844930/img/ygtUpWPIMRhUkrm2.jpg:large)
BBC Sport on Twitter: "🤔 What's the deal with these Nike Vaporfly shoes? 🤔 @samtomharris explains what they are, how they work, and why they have been so controversial... ⬇ https://t.co/exHI8UC9ic" /
![Nike's Vaporfly shoes are fine - but the sport's integrity is at stake if their next version is not banned Nike's Vaporfly shoes are fine - but the sport's integrity is at stake if their next version is not banned](https://www.telegraph.co.uk/content/dam/athletics/2020/01/28/TELEMMGLPICT000222372659_trans_NvBQzQNjv4BqUMKyqgASJ-9H9YMyIowQ0p6vTTzne2C2l27hepmtf28.jpeg)
Nike's Vaporfly shoes are fine - but the sport's integrity is at stake if their next version is not banned
![Nike Vaporfly: BBC Sport explains the technology & arguments about the controversial trainers - BBC Sport Nike Vaporfly: BBC Sport explains the technology & arguments about the controversial trainers - BBC Sport](https://ichef.bbci.co.uk/images/ic/1920x1080/p08237hq.jpg)
Nike Vaporfly: BBC Sport explains the technology & arguments about the controversial trainers - BBC Sport
![Nike's Vaporfly shoes are fine - but the sport's integrity is at stake if their next version is not banned Nike's Vaporfly shoes are fine - but the sport's integrity is at stake if their next version is not banned](https://www.telegraph.co.uk/content/dam/athletics/2020/01/28/TELEMMGLPICT000221552234_trans_NvBQzQNjv4BqMGqotqQWTX5jPM9-BXkGCWY1ymtwWO1djvje8pq3aDI.jpeg)
Nike's Vaporfly shoes are fine - but the sport's integrity is at stake if their next version is not banned
![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=465&dpr=1&s=none)