Nike's Vaporfly 4% shoes do improve running economy - research confirms | Fast Running
Nike's $250 'Vaporfly' running shoe under investigation after record marathon performances | Fox Business
Episode 9: World Marathon Records are Falling, Ineos 1:59, Breaking 2, Nike Vaporfly 4%, Mechanical Doping, and more - The Art and Science of Running Podcast
How the Nike Vaporfly 4% Shoes Work - Runner's World