Asics GEL-CUMULUS 21 GTX shoes with Goretex membrane are made for bad weather. FLYTEFOAM™ Propel technology provides a needed cushioning and the GEL™ technology both at the front and back absorbs shocks on contact with the ground, no matter the distance you are running. GUIDANCE LINE™ technology enhances your gait efficiency, and the I.G.S™ (Impact Guidance System) provides needed stability kilometre after kilometre. AHAR® rubber compound placed at high-wear areas increases the durability of the shoe.