Nike ACG Mountain Fly 2 Low Gore-Tex - Grey - UK 3

The Nike ACG Mountain Fly 2 Low Gore-Tex is excellent for day hikes, trail walking, and light backpacking. Its low-top design offers flexibility but may provide less ankle support than traditional mid or high-top hiking boots, which are generally recommended for more serious or multi-day expeditions with heavy packs.

Gore-Tex is a waterproof, breathable membrane integrated into the shoe's construction. It prevents water from entering the shoe from the outside while allowing moisture vapor (sweat) from your feet to escape, keeping your feet dry and comfortable in wet conditions.

While the Gore-Tex membrane makes them waterproof, these low-top shoes are not insulated. They are suitable for light snow or slush where waterproof protection is needed, but for deep snow or very cold temperatures, insulated winter boots would provide better warmth and protection.

Regular cleaning and occasional reapplication of a Durable Water Repellent (DWR) treatment to the outer fabric are key. The Gore-Tex membrane itself is waterproof for the life of the product, but the DWR helps water bead off the surface, which aids in breathability and prevents the outer material from becoming saturated.

Nike footwear generally runs true to size. However, fit can vary slightly between models and individuals. We recommend trying them on if possible or consulting a Nike size chart. Consider the type of socks you'll wear (e.g., thicker hiking socks) when determining your size.

ACG stands for 'All Conditions Gear.' It's a Nike sub-brand dedicated to outdoor apparel and footwear designed to perform in various weather and terrain conditions, blending technical functionality with distinct style.

First, check your socks. Cotton socks retain moisture, making your feet feel damp even if the shoe is dry. Use wool or synthetic moisture-wicking socks. Also, ensure the outer DWR coating is intact; if water is 'wetting out' on the surface, it impairs breathability. Reapply a DWR treatment if needed. Finally, inspect the shoes for any physical damage or punctures that could compromise the Gore-Tex membrane.

Clean the outsoles thoroughly to remove trapped mud, dirt, or debris that might be reducing traction. Use a stiff brush and water. If cleaning doesn't help, inspect the tread for excessive wear. Over time, the lug patterns can wear down, particularly with heavy use on abrasive surfaces, indicating the need for replacement.

While Gore-Tex is breathable, it's designed for waterproofing and may offer less airflow than non-waterproof shoes. Ensure you're wearing appropriate moisture-wicking socks. In very hot conditions, waterproof footwear can naturally feel warmer. Consider if your activity level or ambient temperature exceeds the shoe's optimal comfort range for breathability.