Merrell MTL Long Sky 2 Matryx

Merrell MTL Long Sky 2 Matryx review: what runners say

Fit

Precise fit, foot-hugging through the midfoot with a racier feel than the standard Long Sky 2. Toe box slightly wider than the Skyfire 2; heel is problematic for slip and friction, especially during break-in.

Feel

Dual-density FloatPro midsole with a medium-firm feel: good control and ground feel without pronounced cushioning. Responsive and low to the ground, not designed for those seeking comfort on long flat stretches.

Durability

Matryx upper (Kevlar filaments + high-tenacity polyamide) rated as virtually indestructible across sources; no breakdown at flex points that plagued the standard mesh version. 5 mm Vibram Megagrip outsole assessed as long-lasting with no signs of premature wear.

Best for

Trail racing and skyrunning from half marathon up to 60–80 km on mixed technical terrain. Speed-oriented light-to-medium-weight runners; not recommended for long ultras on hard, flat ground without additional underfoot protection.

Weak points

The heel is the recurring, structural flaw: poor collar padding, slightly wide at the Achilles, causes slippage and blisters in early runs. Some lacing techniques reduce the issue but do not fully eliminate it.

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