New Balance Fresh Foam X Hierro v9 - Green - Black - UK 13

The description highlights a knit upper with a gusseted tongue designed to protect against loose debris and offer breathability. However, it does not explicitly state that the shoes are waterproof. They are designed for protection against debris, not immersion.

These shoes are specifically engineered for adventurous and technical trail running. The Vibram® outsole with 6mm lugs provides superior traction on diverse surfaces like mud, loose dirt, gravel, and rocky paths.

Brush off loose dirt after each run. For deeper cleaning, gently wipe with a damp cloth and mild soap. Rinse with clean water and allow to air dry naturally away from direct heat or sunlight. Avoid machine washing.

While technically possible, the Fresh Foam X Hierro v9 is optimized for trail running. The deep 6mm lugs, designed for off-road traction, may feel less comfortable and wear down faster if used extensively on hard, paved surfaces.

This refers to the midsole technology that combines two different densities of Fresh Foam X. This design provides both plush comfort for shock absorption over long distances and a more stable, supportive feel underfoot to help navigate uneven trail terrain.

A gusseted tongue is connected to the shoe's upper on both sides, creating a barrier that helps prevent dirt, pebbles, sand, and other loose debris from entering the shoe during your trail runs, keeping your feet more comfortable and protected.

Ensure you are wearing appropriate moisture-wicking trail running socks. You can also try adjusting your lacing pattern to provide more ventilation across the top of your foot. The knit upper is designed for breathability, but sock choice is crucial.

Use a double knot or try a 'surgeon's knot' for added security, which is less likely to loosen during dynamic trail movements. Re-evaluating your lacing technique for a tighter, more secure fit can also help.

While the gusseted tongue helps, ensure your laces are snug, and the tongue is properly centered and extended. For extremely loose or sandy terrain, consider using trail gaiters for enhanced protection against debris entering over the collar of the shoe.

Vibram outsoles offer superior traction, but no shoe is entirely slip-proof on all surfaces. Ensure the lugs are clean of compacted mud or debris, which can reduce grip. Adjust your stride and foot placement on highly challenging wet surfaces.

Check your lacing; a loose fit can reduce perceived stability. Also, ensure your insoles are properly seated. If the issue persists, inspect the outsole for excessive or uneven wear, particularly on the lugs, which might indicate a need for replacement if significant.