Got a pair in Chicago 2 days before the Marathon after trying on the Nike treadmill! Mine are 9:5 usually a 10 in Vapor and alpha ..they weight a meaty 385gramme though you would never believe that when running! Feel so light and bouncy. Did the 5k in them and wow, the legs felt so fresh after - ended up running faster than wanted! I actually bought the woman’s shoe- a size 12 in USA men’s 9:5, just liked the colour way! Back in Uk now and waiting to order my wife a pair tomorrow! These are going to be perfect for recovery and long mileage runs. Thank you Nike! Get a pair quick people!