Tokyo Olympics 2020: Nike prototype Vaporfly shoe banned by World Athletics but current version going to Games-Sports News , Firstpost
Kenya's Brigid Kosgei: School dropout, mother of twins and world record-holder - BBC News
Brigid Kosgei Runs 2:14:04, Shatters Women's Marathon World Record at 2019 Chicago Marathon - LetsRun.com
Nike Vaporfly trainers worn by Eliud Kipchoge and Brigid Kosgei are form of 'technical doping'
Nike's Vaporfly Tests the Boundaries of the Running Shoe - Bloomberg
Brigid Kosgei beaten as another world record smashed in Nike shoes
London Marathon Winner Brigid Kosgei's Motivational Talk Is What Winter Runners Need To Read | British Vogue
Nike Vaporfly Shoes Claim 31 out of 36 Podiums in 2019 World Marathon Majors | Running Shoes Guru
Nike on Twitter: "An unfamiliar course. An isolated stadium. A challenging training season. Through it all, Brigid Kosgei kept going. Because greatness is unstoppable. 👟 🥇 https://t.co/BPdniN6CK8" / Twitter
Brigid Kosgei Shatters World Record at the 2019 Chicago Marathon - Women's Running
Brigid Kosgei Wins 2018 Chicago Marathon in 2:18:35, Becomes 9th Woman To Break 2:19:00 As No Americans Break 2:30 - LetsRun.com
Kenya's Brigid Kosgei Breaks Marathon World Record - The New York Times
Brigid Kosgei smashes marathon world record in Chicago - AW
Chicago Marathon — World Record For Brigid Kosgei - Track & Field News
Nike's Brigid Kosgei Sets Women's Record for Fastest Marathon Time – Footwear News