Sizing: Fits small; purchase 1/2 size larger than standard running shoe lengthHeel: Medium to narrowMid-foot: Medium volumeForefoot: MediumToe-Box height: Medium to lowArch Structure: MediumShoe Shape: Semi-Curved The ASICS Gel Cumulus 18 GTX is a standard, daily running, neutral shoe with a waterproof GORETEX upper, designed for a neutral or supinated foot motion.