GUC, see photos Cushioned for longer runs and charging over mountains, Merrell's lightweight and durable Ascend Glove stays true to your natural stride with its barefoot profile. Its aggressive, grabby lug design and TrailProtect pad are essential for rocky terrain and extra off-road support. M-Connect Series: 0 mm heel-to-toe drop keeps you connected to the terrain—the heel and forefoot are level, allowing natural barefoot motion 6 mm compression-molded EVA midsole provides cushion and protection Stack height: 10.5 mm (amount of material between bottom of your foot and ground) TrailProtect pad in the forefoot and heel offers additional support for the roughest terrain Durable, nonmarking Vibram rubber outsole with aggressive, grabby lug design for traction, grip, stability, and slip resistance Fabric and synthetic upper for breathability and support MotionMesh engineered for optimal breathability and range of motion Breathable mesh lining M Select Fresh naturally prevents odor before it starts for fresh-smelling feet