ASICS Men's 33 M 2 Running Shoe 100% Synthetic Imported Rubber sole Shaft measures approximately 2" from arch AmpliFoam: Engineered to maintain durability at softer densities, providing better flexibility, comfort, and platform adaptability ideal for natural running. Solyte Midsole Material: A lighter weight midsole compound than ASICS' standard EVA and SpEVA. Also features enhanced cushioning and durability. ComforDry Lasting: This lasting material features plush underfoot comfort while providing excellent moisture management, high level breathability, and antimicrobial properties. ComforDry Sock liner Provides cushioning performance and anti-microbial properties for a cooler, drier, healthier environment. Seamless Construction