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 PureGEL™ technology. These features make your distance training feel smooth and comfortable. Features:Neutral:- Foot Type: Normal size arches- Push Off: There is even distribution from the front of the foot.- Considered Injuries: Less likely due to effective shock absorption, but neutral runners are not immune to injury.- How your foot contacts the ground: The foot lands on outside of the heel, then rolls inward (pronates) to absorb shock and support body weight.Overpronation:- Foot Type: Low arches or flat feet- Push Off: Big toe and second toe do majority of the work.- Considered Injuries: Shin splints, plantar fasciitis, bunions, heel spurs.- How your foot contacts the ground: The foot lands on outside of heel, then rolls inward (pronates) excessively, transferring weight to inner edge instead of ball of the footSpecifications:- Surface: Road- Weight: 266 g/9.3 oz- Support: Neutral, Stability- Cushion: MaximumTechnology:- Engineered mesh upper: Improves breathability- External back heel counter: Helps keep the foot stable and provide a more comfortable stride- 4D Guidance System™ feature: Helps create adaptive stability for a more balanced stride- Rearfoot PureGEL™ technology: Helps provide lightweight cushioning and softer landings- FF BLAST™ PLUS ECO cushioning is made with approximately 20% bio-based content and helps provide cloud-like comfort- OrthoLite™ X-55 sockliner: Improves comfort- Reflective details: Designed to help improve visibility- Hybrid ASICSGRIP™: Improves the outsole grip- The sockliner is produced with the solution dyeing process that reduces water usage by approximately 33% and carbon emissions by approximately 45% compared to the conventional dyeing technology.