adidas Ultraboost 20 - Trainers - White - Black - UK 4.5

The Ultraboost 20 generally offers a standard fit. While the Primeknit upper provides some flexibility, individuals with significantly wide feet might find them snug. It's recommended to try them on if possible or consider going up half a size.

The Boost midsole can be cleaned with a damp cloth and mild soap. For tougher dirt, an old toothbrush can be used gently. Avoid machine washing or harsh chemicals.

Boost technology is known for its exceptional energy return, providing a cushioned yet responsive feel that helps reduce impact and fatigue during physical activity.

While the outsole provides good traction, the materials used are not fully waterproof. They can handle light moisture, but prolonged exposure to heavy rain may result in wet feet.

These trainers are primarily designed for running, offering excellent performance on roads. They are also suitable for general athletic training and comfortable for everyday wear.

There should be about a thumb's width of space between your longest toe and the end of the shoe when standing. Ensure the heel does not slip and there's no excessive pressure on any part of your foot.

Ensure you have selected the correct size. If still tight, try loosening the laces and re-tying them for a more customized fit. The Boost midsole may also require a short break-in period.

Check the outsole for embedded debris like mud or small stones and clean them off. Ensure the shoes are not excessively worn down, as this can impact grip.

Clean gently with a damp cloth and mild soap. For stubborn marks, a specialized shoe cleaner might be effective, but always test on an inconspicuous area first.