Sizing: Standard running shoe lengthHeel: MediumMidfoot: MediumForefoot: MediumToe-Box Height: Medium to lowArch Structure: Medium to highShoe Shape: Semi-Curved The ON Cloudflow is a lightweight neutral trainer that features 18 individual cloud pods underfoot for a high level of cushioning and responsiveness. This shoe encourages a natural roll that is ideal for tempo runs and faster efforts.