New Balance NB Fresh Foam 680 Trainers - Yellow - UK 4

Fresh Foam is New Balance's proprietary cushioning technology designed to provide a soft, lightweight, and responsive feel underfoot, enhancing comfort during impact.

Yes, the Fresh Foam cushioning and durable design make them suitable for long-distance road running, including marathon training.

These trainers are specifically designed for road running and general training. They are not recommended for technical trail running due to their tread and support structure.

Spot clean with a damp cloth and mild soap if necessary. Allow to air dry completely away from direct heat.

Please refer to the retailer or New Balance's official website for current warranty information, as it can vary by region and purchase date.

Generally, running shoes should be replaced every 300-500 miles or when the cushioning and support feel significantly reduced.

'v9' typically indicates the version number of the shoe model, signifying updates from previous versions. 'Ld63' may refer to a specific internal product code or slight variation.

Loosen the laces and re-tie them, ensuring even pressure. If still uncomfortable, consider if a larger size is needed.

The Fresh Foam cushioning may degrade with extensive use. For optimal performance, consider replacing trainers after approximately 300-500 miles of running.

This can indicate heavy use or running on abrasive surfaces. Check for even wear patterns; if wear is uneven, it might indicate a fit issue.