Asics Gel-Kayano 20 Trainers - Black - Size 8.5

The GEL-KAYANO 20 features a FLUIDFIT cage designed for an adaptive fit, which can accommodate various foot widths. However, if you have significantly wide feet, it is always recommended to try them on or consult a sizing guide.

Yes, the ASICS GEL-KAYANO 20 provides structural cushioning and support, making it a suitable choice for marathon runners who require enhanced stability and impact protection over long distances.

The GEL-KAYANO 20 focuses on a combination of retro aesthetics with advanced stability and cushioning technologies like Dual GEL and GUIDANCE TRUSSTIC system, catering to both runners and those who appreciate classic trainer designs.

Ensure there is about a thumb's width of space between your longest toe and the front of the shoe. The heel should feel secure without slipping, and the midfoot should be comfortably snug.

The trainers are made with synthetic fiber and nylon uppers, offering some resistance to light moisture, but they are not waterproof. They are designed for breathability.

FLUIDFIT is a technology that combines multi-directional stretch mesh with elasticated or stretch materials, creating a very adaptive fit that wraps around your foot for enhanced comfort and support.

For running, it's generally recommended to replace trainers every 300-500 miles. For everyday wear, they should be replaced when you notice significant wear on the sole or a loss of cushioning and support.

Ensure you have selected the correct UK size. Try wearing them with athletic socks. If discomfort persists, consider if the shoe's structure is compatible with your foot type or if a break-in period is needed.

The cushioning may naturally wear down with extensive use. For optimal performance, consider replacing trainers after 300-500 miles of running or when signs of wear are evident on the sole and midsole.

Check lacing techniques; ensure the heel is locked into the back of the shoe. The FLUIDFIT cage is designed for a snug fit; ensure it's not overly tightened if it causes pressure.

The rubber sole is designed for traction, but performance can vary on extremely smooth or wet surfaces. Ensure the sole is clean; debris can reduce grip.