Women's Nike Vaporfly 4 Size:9 Our trusted GuideRails® support system

Our trusted GuideRails® support system helps reduce excess motion

and connection on the trail

Heel-to-toe drop: 8mm

deeper Active Foot Frame™

And much more

Women's Nike Vaporfly 4 Size:9 Our trusted GuideRails® support systemThe Vaporfly 4 is a lean, mean, mile eating machine. We trimmed weight in the midsole, outsole and upper from the Vaporfly 3 without sacrificing performance. The result is a lighter, more propulsive all around racing shoe thats trusted from the mile to the marathon. Performance Approved The handwritten number on the midsole salutes the wear testers who put these shoes through our rigorous test process to give you the best performance possible. Full