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.S®links 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.