Features: Move your mind with the GEL-KAYANO 31 shoe’s adaptive stability and premium comfort. ​​The 4D GUIDANCE SYSTEM™ helps provide adaptive stability. This helps you experience a more supportive and balanced stride during your distance training. ​​ Its midsole implements FF BLAST™ PLUS ECO cushioning and Pure GEL™ technology. These features make your distance training feel surprisingly smooth and comfortable.​ Softer landings. Pure GEL™ technology helps deliver enhanced shock absorption and even smoother transistions. More cushioning. FF BLAST tm Plus Eco foam is Asics softest cushioning yet, made from approximately 20% bio-based content using renewable resources. Better grip. The HYBRIS ASICSGRIP™ outsole provides better frip and more softness underfoot. Designed to help improve visibility with reflective details. Easy access. A new knit color construction and pull-tab offer a modern step-in with easy on and off access. Engineered mesh upper Improves breathability A lighter footprint for a brighter tomorrow. The new GEL-KAYANO 31 shoe's carbon footprint is 27% lower than the industry average Specs: Weight - 266g Heel-to Toe Drop 10 mm Surface - Road Support - Neutral/Stability Cushion - Maximum Asics Gel Kayano 31 Shoes 5.5 B Black/Pure Silver