Nike ACG Mountain Fly 2 Low Gore-Tex - Grey - UK 11

While the Nike ACG Mountain Fly 2 Low Gore-Tex offers comfort and cushioning, they are primarily designed for walking, light hiking, and general outdoor/urban exploration rather than dedicated running. For serious running, especially on trails, specialized running shoes would be more appropriate.

No, machine washing is not recommended as it can damage the Gore-Tex membrane, adhesives, and overall structure of the shoe. Please follow the hand-washing care instructions provided in the 'Care Instructions' section.

If water beads up and rolls off the outer fabric, the DWR treatment is working well. If water starts to soak into the outer fabric, it's time to clean and potentially reapply a DWR-restoring spray. Even if the DWR wears off, the internal Gore-Tex membrane will still keep water out, but the outer fabric will become saturated and heavy.

For optimal comfort and to benefit from the shoe's breathability, it's recommended to wear moisture-wicking socks made from synthetic blends or merino wool. Avoid cotton socks, especially during outdoor activities, as they retain moisture and can lead to discomfort.

Nike sizing can vary slightly between models. Generally, the Mountain Fly 2 Low Gore-Tex tends to fit true to size for most individuals. However, if you are between sizes or prefer to wear thicker socks, consider trying the next half-size up. It's always best to try them on if possible.

Ensure pants or socks are not wicking water into the shoe from the top. Check for damage to the Gore-Tex membrane. Also, consider if it's sweat rather than external water; Gore-Tex is breathable but not entirely immune to internal moisture in high-exertion scenarios. Ensure adequate ventilation after use.

While the outsole offers excellent traction, extreme conditions (e.g., slick ice, polished wet rocks with algae) can still cause slippage. Ensure the tread is clean and free of embedded debris. Adjust your stride and evaluate the surface carefully.

Ensure you are wearing appropriate socks (not too thick or thin). Loosen the lacing, then re-tighten for a customized fit. If discomfort persists, consider the sizing; it might be necessary to try a different size or width if available. Allow for a short break-in period.

Properly air out shoes after each use. Remove insoles to allow for better ventilation. If odor persists, wash insoles separately or use an athletic shoe deodorizer spray. Avoid prolonged storage in damp environments.