Sizing: Standard running shoe lengthHeel: MediumMidfoot: Medium to low volumeForefoot: WideToe-Box Height: Medium-lowArch Structure: Medium-HighShoe Shape: Semi-Curved The Topo Athletic MT-2 is an ultra distance trail shoe option. The low profile design makes for a lightweight shoe, but it has enough cushioning for a fast 50 miler or 100k.*Runner’s World is a registered trademark of Rodale, Inc. All rights reserved.