Sizing: Standard running shoe lengthHeel: Medium to narrowMidfoot: Medium volumeForefoot: Medium to narrowToe-Box Height: Medium to lowArch Structure: MediumShoe Shape: Semi-Curved Premium comfort and exceptional cushioning keeps the ASICS Gel Nimbus 19 atop the best selling list, continuing its tradition of success. The soft cushioning and plush feel holds up on long or short runs and works well for recovery runs.