Stable, cushioned and built to offer a smooth, robust ride in the longest trail races, the M1 is optimized for the mountains. It features our next-gen JETCELL midsole to deliver unmatched energy return, and a full-coverage outsole with a trio of Vibram technologies for predictable grip in extreme situations.

• Next-gen JETCELL midsole foam delivers our highest energy return and consistent performance with twice the material strength of PEBA.
• Full coverage Vibram Megagrip, Litebase, and Traction Lug technology.
• TUNEDFIT Dual Lacing System for separate lace adjustment.
• Wider base and higher sidewalls enhance stability during long runs.
• Supercritical foam insole for enhanced energy return and comfort.
• Lug Depth 4 mm
• Weight 9.7 oz / 275 g (US M9)
• Drop (Stack Height) 4 mm