Zappos.com is proud to offer the ASICS - Gel-Cumulus 9 (White/Lightning/Steel Blue) - Footwear: The Gel-Cumulus 9 is the newest version of the Gel-Cumulus series (Replacing the Gel-Cumulus VIII); Running shoe built for the neutral to under-pronator who requires an enhanced cushioning. The GEL-Cumulus VIII is a cushioned shoe designed for the runner who desires shock attenuation, flexibility and an open toe box. Upgraded features include ASICS patented Impact Guidance System (I.G.S. ) to enhance the foot's natural gait. Personalized Heel Fit (PHF ) provide a personalized fit so comfortable, you'll never take them off. GEL Cushioning Systems attenuates shock during impact phase and toe-off phases. Open mesh upper provides excellent comfort and breathability. Lightweight Solyte midsole material delivers durable cushioning. Trusstic System links the rearfoot and forefoot and shores the midfoot.