Details Go further than you ever thought possible with the men's GEL-CUMULUS® 21 LS performance road running shoe by Asics. This premium shoe offers supreme bounce and energy thanks to FLYTEFOAM® Propel and FLYTEFOAM® Lyte technology, while the combination of rear and forefoot GEL® technology offers unbeatable levels of shock absorption and cushioning. The shoe has outstanding support as you move, with I.G.S® (Impact Guidance System) technology ensuring your feet stay in their natural gait. Extra stability is provided by the internal heel counter and GUIDANCE LINE™ technology, which enhances the efficiency of your stride, giving you the energy you need to take on those extra miles. If you're running long distances, you need a shoe that's built to last. They've added their highly resistant AHARPLUS™ compound at high impact areas of the outsole to reduce the effects of abrasion and long-term wear. The GEL-CUMULUS® 21 LS shoe also features an engineered jacquard mesh for breathability that keeps your feet feeling fresher for longer. Meanwhile, the LITE-SHOW™ technology reflective detailing means you'll always capture attention, even when the light begins to fade. It all adds up to a running shoe you can count on as you look to boost your performance and reach new distances. Upper Ortholite® Sockliner for moisture management (Ortholite is a registered trademark of ATP Manufacturing LLC). Midsole FlyteFoam® Propel provides supreme bounce thanks to a unique elastomer compound FlyteFoam® Midsole technology provides exceptional bounce back and responsiveness no matter the distance, utilizing organic super fibers to help reduce packing out that traditionally happens with softer, low density foams. I.G.S® (Impact Guidance System) Technology: ASICS design philosophy that employs linked componentry to enhance the foot's natural gait from heel strike to toe-off. Outsole AHAR Outsole: Acronym for ASICS High Abrasion Rubber. Placed in critical areas of the outsole for exceptional durability. DuraSponge® Outsole: A blown AHAR® rubber compound for enhanced cushioning and durability in the forefoot. Heel Rearfoot and Forefoot GEL® Technology Cushioning System: Attenuates shock during impact and toe-off phases, and allows movement in multiple planes as the foot transitions through the gait cycle. Forefoot Employs 45 degree full length SpevaFoam™ 45 lasting material for a soft platform feel and improved comfort. Offset Heel Height: N/A Forefoot Height: N/A Offset: 10 Width D Weight N/A ASICS GEL-Cumulus 21 Men's