The ASICS GEL-KAYANO 31 (Wide) in "Cool Grey / Pure Silver" is a top-tier stability trainer specifically designed for runners with wider feet who require adaptive support and maximum comfort. This model features the revolutionary 4D GUIDANCE SYSTEM™, which utilizes a medial foam component to provide on-demand stability by guiding the foot through a more balanced stride as fatigue sets in. For an exceptionally plush ride, the midsole combines FF BLAST™ PLUS ECO cushioning-made with approximately 20% bio-based content-with Rearfoot PureGEL™ technology, which is 65% softer than traditional gel for enhanced shock absorption and smoother transitions. The shoe is finished with a highly breathable engineered mesh upper, a convenient knit heel pull tab, and a HYBRID ASICSGRIP™ outsole that provides superior traction and durability for long-distance road running.