ASICS Women's Fuzex PR Running Shoe 100% Synthetic Imported Rubber sole Shaft measures approximately 2.5" from arch fuzeGel Midsole: Cushioning Technology newest to ASICS ,made from the fusion of GEL property and foam creates lightweight adaptable comfort. Seamless construction ComforDry Sockliner: Provides cushioning performance and anti-microbial properties for a cooler, drier, healthier environment. ComforDry Lasting: This lasting material features plush underfoot comfort while providing excellent moisture management, high level breathability, and antimicrobial properties. AHAR: Acronym for ASICS High Abrasion Rubber. Placed in critical areas of the outsole for exceptional durability.