Merrell - Nova 4 Waterproof in Blue - Trainers - UK 9

While they offer a comfortable fit and decent cushioning, they are primarily designed for trail running. The outsole grip and support are optimized for off-road terrain, and the cushioning may feel firm for long distances on pavement.

Regular cleaning with a damp cloth and mild soap helps. Avoid harsh chemicals or machine washing. Ensure the shoes are properly air-dried after cleaning or getting wet.

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

These trainers are designed for a standard fit. Wearing very thick socks might make them feel snugger. It's recommended to try them on with the type of socks you intend to wear for running.

Use a soft brush to remove loose dirt. For stains, use a damp cloth with a small amount of mild soap and water. Rinse with a clean damp cloth and allow to air dry completely.

Merrell generally offers true-to-size fits, but foot shapes vary. It is always recommended to consult the size chart and, if possible, try them on before purchasing, especially if you are between sizes.

Ensure laces are tied to seal the upper effectively. Check for any debris or damage to the waterproof membrane. Moisture can also come from sweat; consider wearing moisture-wicking socks.

Clean the outsole treads of mud or debris. The grip is optimized for trail surfaces; performance on highly polished or wet indoor floors may be reduced.

Verify you have the correct size and width. Break in the shoes gradually with shorter walks before attempting long runs. Ensure socks are well-fitting and not causing friction.