They'll love their play days in the Gel-Kayano 20 GS! ; Breathable mesh upper with synthetic overlays. Biomorphic Fit: stretch material provides an exceptional fit and feel. Lace-up closure for snug fit. Heel Clutching System promotes an improved fit and increased support. PHF: two layers of memory foam line the collar and mold to your heel. I.G.Slinks componentry to enhance the foot's natural gait from heel strike through toe-off. Rearfoot forefoot Gel cushioning systems work together to better attenuate impacting shock and allow the foot to move fluidly throughout the gait cycle. Gender-Specific Forefoot Cushioning: top layer of injected Solyte for increased underfoot cushioning. DuoMax Support System: dual-density midsole positioned for optimal support and stability. Plus 3 adds 3 mm of height to help alleviate achilles tension. Space Trusstic System mid-foot stabilizer creates a pocket between the Trusstic System unit and the midsole, promoting more controlled midsole deformation, as well as more efficient foot function. Guidance Line: vertical flex groove that decouples the tooling along the line of progression for maximum stride efficiency. AHAR: durable and strategically placed throughout high-wear areas of the outsole. DuraSponge forefoot outsole material comprised of AHAR rubber for superior cushioning and long-lasting wear. Imported. Measurements: ; Heel Height: 3 4 in ; Weight: 8 oz ; Platform Height: 1 4 in ; Product measurements were taken using size 2 Little Kid, width M. Please note that measurements may vary by size.