ASICS Women's 33-FA Running Shoe 100% Synthetic Imported Rubber sole Fluidaxis anatomically correct deep flex grooves have been aligned to the joints of the foot this innovative construction enables the shoe to recognize, adapt, and respond to the athlete's exact load and positional change from first impact to toe-off Solyte midsole material a lighter weight midsole compound than asics' standard ethylene vinyl acetate and sp ethylene vinyl acetate Also features enhanced cushioning and durability Comfordry lasting this lasting material features plush underfoot comfort while providing excellent moisture management, high level breathability, and anti-microbial properties Comfordry sockliner provides cushioning performance and anti-odor properties for a cooler, drier, healthier environment ComforDry Sockliner Provides cushioning performance and anti-odor properties for a cooler, drier, healthier environment