Nike ACG Mountain Fly 2 Low Gore-Tex - Grey - UK 6

Yes, they feature a Gore-Tex membrane which makes them waterproof, keeping your feet dry from external moisture. However, water can still enter if it goes over the low-cut collar of the shoe.

These shoes are excellent for light to moderate hiking, trail walking, and general outdoor use. For serious hiking or mountaineering on very rugged or technical terrain, shoes with higher ankle support and a more rigid sole might be more appropriate.

Brush off loose dirt, then wipe with a damp cloth and lukewarm water. Avoid harsh chemicals or machine washing. Air dry naturally away from direct heat. You can reapply a DWR treatment if the outer fabric starts to absorb water.

Nike ACG Mountain Fly 2 Low Gore-Tex shoes generally fit true to size for adults. We recommend trying them on or consulting a Nike size guide if you are unsure, especially if you plan to wear thick hiking socks.

'ACG' stands for All Conditions Gear, which is Nike's line of outdoor apparel and footwear designed to perform in various weather conditions and environments.

The MPN (Manufacturer Part Number) `HF6245-001` refers to the specific model of the Nike ACG Mountain Fly 2 Low Gore-Tex. While it is associated with the 'Dark Smoke Grey' colorway, it's a model identifier that often encompasses specific color and material combinations for a given style.

Ensure water is not entering over the top of the low-cut collar, especially in deep puddles or heavy rain without gaiters. Also, check for any visible damage or punctures to the shoe's upper that might compromise the Gore-Tex membrane. If the outer fabric is 'wetting out,' consider re-applying a DWR treatment to help water bead off.

While Gore-Tex is breathable, it may feel warmer than non-waterproof shoes, especially in hot or humid conditions. Ensure you are wearing appropriate moisture-wicking socks (not cotton) to manage internal moisture. Clean the outer surface to ensure dirt isn't impeding the fabric's ability to shed moisture vapor.

Check your lacing; ensure it's snug but not overly tight. Experiment with different lacing patterns if you have specific pressure points. Also, ensure you are wearing appropriate athletic or hiking socks, as thin or ill-fitting socks can cause friction. Consider the break-in period for the shoes to fully adapt to your foot.

While the outsole provides excellent traction, no shoe is infallible on all surfaces. Assess the condition of the outsole for excessive wear. If walking on extremely slick or icy surfaces, caution is always advised. Ensure the outsole is clean, as mud or debris can reduce grip.