The new GEL-CUMULUS GTX is engineered to give you supreme cushioning and comfort through the tough winter months. The Gore-Tex waterproof upper keeps you dry. Plus, the Snow Rubber Outsole acts as your winter tyre, giving you excellent grip on slippery roads. Combined with the tough outsole is a special rubber compound in the forefoot for improved forefoot grip on icy roads. It features a FluidRide midsole that gives you a more efficient and comfortable ride on longer runs. The GEL-CUMULUS GTX also helps you run more efficiently when fatigued, with Full Length Guidance Line that guides your foot through the gait cycle.