ASICS Men's GEL DS Racer 11 Running Shoe 100% Textile and Synthetic Imported Rubber sole Shaft measures approximately 2.96" from arch Duomax support system a dual density midsole system positioned to enhance support and stability, positioned sport specifically Truss tic 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 ethylene vinyl acetate and vinyl acetate also features enhanced cushioning and durability Seamless construction the use of seamless materials reduces the potential for irritation and friction caused by traditional stitches and seams Seamless Construction The use of seamless materials reduces the potential for irritation and friction caused by traditional stitches and seams