Shipping date: on or before 20 Aug, 2026.

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.

Product Details

• Activity: Trail Running
• Best for: Long-distance trail races
• Weight: 9.7 oz / 275 g (US M9)
• Heel-To-Toe Drop: 4 mm
• Stack Height: Heel 38 mm, Forefoot 34 mm
• Lug Depth: 4 mm
• Upper: TPEE-blended yarns
• Midsole: JETCELL™
• Outsole: Vibram® Megagrip, Litebase, and Traction Lug
• Lacing: TUNEDFIT™ Dual Lacing System

Key Features

• 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.

Specifications

• Weight: 9.7 oz / 275 g (US M9)
• Stack Height: Heel 38 mm | Forefoot 34 mm
• Drop: 4 mm
• Lug Depth: 4 mm
• Best for: Long-distance trail races
• Colors: Moss, Oatmeal, Glacier