ASICS Men's Gel-Quantum 180 2 Running Shoe 100% Textile and Synthetic Imported Rubber sole Shaft measures approximately 3.5" from arch Rearfoot and Forefoot GEL Cushioning Systems: Attenuates shock during impact and toe-off phases, and allows movement on multiple planes as the foot transitions through the gait cycle. Seamless construction Trusstic System: Reduces the weight of the sole unit while retaining the structural integrity of the shoe. 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.