New Balance Fresh Foam X Hierro v9 Trainers - Grey/Green - UK 10

The Fresh Foam X Hierro v9 features a breathable knit upper which is not fully waterproof. While it offers some protection against light moisture and debris, they are not designed for full submersion or heavy rain.

The Fresh Foam X cushioning provides a dual-density experience, offering both plush comfort for impact absorption and a stable underfoot feel for support on uneven terrain.

The deep, 6mm lugs are designed to provide superior traction and grip on a wide range of challenging trail surfaces, including mud, loose dirt, and wet rocks.

While the cushioning is comfortable, these shoes are specifically designed for trail running. The aggressive lug pattern on the Vibram® outsole may feel less efficient and wear down faster on paved surfaces.

Gently brush off loose dirt, then use a damp cloth with mild soap. Allow them to air dry completely away from direct heat. Avoid machine washing.

These trainers are intended for adventurous trail running and light hiking on varied and technical outdoor terrains.

The knit upper is breathable and designed for comfort. It is also designed to work with a gusseted tongue to help protect against loose debris entering the shoe.

Ensure the Vibram® outsole is clean from mud and debris. For persistent issues, consider the conditions; the lug pattern is optimized for varied terrain, and extreme wetness on smooth surfaces can affect grip.

Verify the shoe size and fit. Ensure laces are tied appropriately for a secure but not overly tight fit. Consider using different socks if the issue persists.

While the gusseted tongue helps, very fine debris may still enter. Ensure laces are tied securely, and consider wearing gaiters for added protection in extremely dusty or debris-heavy environments.

The Fresh Foam X Hierro v9 may require a short break-in period. Wear them for shorter walks or runs initially to allow the cushioning to adapt to your foot.