Nike Epic React Flyknit 2 - Black - UK 3.5

While they offer great cushioning and responsiveness, they are primarily designed for daily training and shorter to mid-distance runs. For marathons, some runners may prefer shoes with more specialized long-distance support or cushioning.

Yes, their comfort and support make them suitable for general fitness activities like gym workouts or walking. However, they are optimized for running performance.

There should be about a thumb's width of space between your longest toe and the end of the shoe. The fit should be snug but not tight, with the heel secure and no excessive pressure points.

No, the Flyknit upper is designed for breathability and is not waterproof. They are best suited for dry conditions or light rain.

React cushioning is known for its balance of softness and responsiveness, providing a 'springy' feel. It is generally softer and more energetic than traditional EVA foams.

The lifespan varies based on usage, terrain, and runner's weight, but typically, running shoes last between 300 to 500 miles.

The Flyknit upper may require a short break-in period. Wear the shoes for short durations initially and gradually increase mileage as they conform to your foot.

Ensure the laces are tied correctly, using a runner's knot if necessary to secure the heel. Verify that the size is correct for your foot.

While React foam is durable, performance may subtly decrease with extensive use. Consider replacing shoes after 300-500 miles or when cushioning feels significantly diminished.