adidas ZX 2K - Trainers - Black - Size UK 7

The ZX 2K Boost trainers are designed primarily for comfort and style in casual settings. While they offer good cushioning, they may not provide the specialized support and features required for long-distance running like marathon events.

It's recommended to try them on if possible. Check the fit around the heel, midfoot, and toe box. Ensure there's a thumb's width of space between your longest toe and the end of the shoe. Given the potential for a narrow fit, consider your usual shoe width when selecting a size.

No, machine washing is not recommended as it can damage the materials, adhesives, and cushioning technology. Hand wash gently with a damp cloth and mild soap.

Boost technology provides exceptional energy return, meaning it absorbs impact and then bounces back, giving you a responsive and cushioned feel with every step.

The color is designed to be durable, but prolonged exposure to direct sunlight can cause fading over time. Store them away from direct light when not in use.

ZX is a historic adidas running shoe series, and '2K' typically denotes advancements or iterations within that lineage, often referring to updated cushioning and design elements.

Wear the trainers for short periods initially to allow them to break in. If the issue persists and is due to width, consider trying a half-size larger or exploring wider-fit alternatives if available.

This can sometimes occur due to friction between parts of the shoe. Try applying a small amount of talcum powder or a dryer sheet inside the shoe where the squeak originates. Ensure laces are not tied too tightly.

Boost cushioning can feel firmer when new. With regular wear, the foam will soften and become more responsive. Ensure you are wearing appropriate socks for added comfort.