Mens Nike Vaporfly 4% Flyknit Size 5.5 (AJ3857 600) No Box | eBay
NIKE ZOOMX VAPORFLY NEXT% 2 OG MONZA KIPCHOGE
Metabolic and performance responses of male runners wearing 3 types of footwear: Nike Vaporfly 4%, Saucony Endorphin racing flats, and their own shoes - ScienceDirect