ASICS Women's 33 DFA 2 Running Shoe 100% Synthetic Imported Rubber sole Amplifoam engineered to maintain durability at softer densities, providing better flexibility, comfort, and platform adaptability ideal for natural running. Fluid axis: anatomically correct deep flex grooves have been aligned to the joints of the foot. Comfordry lasting this lasting material features plush underfoot comfort while providing excellent moisture management, high level breathability, and antimicrobial properties. Solyte midsole material: a lighter weight midsole compound than asics' standard eva and speva. 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.