World Athletics recently approved a new set of rules that limit a stack height of a shoe to 40mm for in use competition. With new rules and guidelines in place, we met up with Spencer from the adidas team to chat about the challenges of developing new shoes and how adidas is going about building the fastest shoes on the market. adidas adizero Prime X Strung will be available at Running Warehouse in February 2023! Shop adidas Men's Running Shoes: https://www.runningwarehouse.com/catpage-ADIZEROMF.html?from=youtube Shop adidas Wen's Running Shoes: https://www.runningwarehouse.com/catpage-ADIZEROWF.html?from=youtube Shop Running Warehouse EU: https://www.runningwarehouse.eu/catpage-RWADIMS-EN.html?from=youtube ➤RW Europe YouTube: https://www.youtube.com/channel/UC9NQsFCvmZ__8hDvewjA2SQ Shop Running Warehouse AU: https://www.runningwarehouse.com.au/adidas_Mens_Running_Shoes/catpage-RWADIMRS.html?from=youtube ➤YouTube: https://www.youtube.com/user/runningwarehouse?sub_confirmation=1 ➤ Facebook: https://www.facebook.com/runningwarehouse ➤ Instagram: https://www.instagram.com/runningwarehouse/ ➤ Twitter: https://twitter.com/RunWithTheHouse/ World Athletics Stack Heights Rules