ASICS Little Kid/Big Kid Gel-Nimbus 11 Running Shoe 100% Synthetic and mesh Rubber sole Impact Guidance System employs linked componentry that enhances the foot's natural gait from heel strike to toe-off ComforDry Sockliner provides cushioning performance and anti-microbial properties for a cooler, drier, healthier environment Biomorphic Fit Upper helps reduce buckling and the potential for irritation Asymmetrical Lacing Design reduces the potential for irritation and provides improved comfort and fit