The miles roll off like never before in the latest iteration of an ASICS classics. With an improved fit, enhanced shape that holds the heel better than before, and lighter weight, the Gel-Kayano 23 has your back (and soles) to outlast even the toughest run! ; Predecessor: Gel-Kayano 22. ; Support Type: Overpronation/Stability. ; Cushioning: High energizing cushioning. ; Surface: Road. ; Differential: 10 mm. ; Fit Tip: ASICS recommends ordering a half size larger than your typical size. ; FluidFit upper technology combines multi-directional stretch mesh with stretch synthetic reinforcements that adapt to the foot for a glove-like fit. ; Lace-up closure. ; Exoskeletal Heel Clutching System improves fit and support. ; Plush tongue and collar. ; Breathable fabric lining. ; ComforDry X-40 sockliner offers antimicrobial and moisture-management properties for a drier, healthier environment. ; I.G.S (Impact Guidance System) employs linked componentry to enhance the foot's natural gait from heel strike through toe-off. ; FluidRide midsole piece provides the ultimate combination of bounce back, cushioning, and lasting durability at a reduced weight. ; Rearfoot and forefoot GEL cushioning systems attenuate impacting shock and allow for a smooth transition to midstance. ; Dynamic DuoMax Support System boosts stability and support without the added weight. ; Combination of GEL and FlyteFoam technologies promotes a lighter weight and build. ; Heel/ Toe: 22 mm/12 mm. ; Supremely durable AHAR (ASICS High Abrasion Rubber) strategically placed in high-wear areas. ; Guidance Line vertical flex groove decouples the tooling along the line of progression for a smoother ride. ; Guidance Trusstic System integrates Guidance Line construction to enhance gait efficiency and promote mid-foot structural integrity. ; ComforDry Lasting incorporates plush underfoot comfort without sacrificing moisture management and breathability. ; Imported. Measurements: ; Weight: 10 oz ; Product measurements were taken using size 8.5, width D - Wide. Please note that measurements may vary by size.