Adidas X Speedflow+ Adizero FG 'Bold Blue'
Colorway: Bold Blue/Cloud White/Red · Style code: GX2581 · Release date: September 13, 2021 · Price: $323 · Availability: Available now
More colorways: Adidas X Speedflow.1 FG 'Adizero Prime X' (GW0745)
The X Speedflow took over from the X Ghosted at the top of adidas's speed boot line in July 2021, built around an engineered agility frame that wraps the foot and sold in two forms: a laceless plus model and a laced .1. Two months later adidas ran a cross-sport edition that reached into its own track program, tying the boot to the Adizero Prime X running shoe and its Carbitex construction.
That special edition arrived in September 2021, with the laceless version in bold blue set against white, red and bright green accents, while the laced version inverted the scheme around white. Achraf Hakimi, Rafael Leao and Vivianne Miedema were among the first to wear the pair in matches and training that season.
The premise was unusual for a football boot. Rather than another seasonal graphic on the same silhouette, the design argument came from a different sport entirely, borrowing the language of a marathon racing plate for something worn on grass.