Sizing: Fits large, purchase 1/2 size smaller than standard running shoe sizeHeel: Medium to narrowMidfoot: Low volumeForefoot: MediumToebox Height: LowArch Structure: MediumShoe Shape: Semi-Curved With a sock-like fit and all-day cushioning, the adidas Ultra Boost raises the bar for comfort among premium neutral running shoes. It's great for any type of run.