Run further than you thought possible with the GEL-CUMULUS® 21 Knit running shoe from ASICS. The shoe is designed to help cushion and support your feet when running long distances. It features two midsole foams: one for lightweight softness and another that adds more spring to your step. This shoe also has rear and forefoot GEL® technology for premium level shock absorption. Our GUIDANCE LINE™ technology helps you run more efficiently, while the internal heel counter holds your foot in position for added support. The flexible knit upper provides a comfortable fit and a more personalized feel. This feeling is exhibited because of the sockliner that molds to the shape of your foot for added comfort. The GEL-CUMULUS® 21 Knit comes with a durable outsole that reduces wear at key impact areas while reflective details on the outside of the upper boost your visibility in low light conditions.
Knit Upper
FLYTEFOAM® Propel Technology
ASICS energetic foam formulation that provides supreme bounce thanks to a unique elastomer compound.
AHAR® Outsole
Acronym for ASICS High Abrasion Rubber. Placed in critical areas of the outsole for exceptional durability.
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.
EVA Sockliner
Removable sockliner that provides cushioning performance.
Guidance Line® Midsole Technology
Vertical flex groove decouples the tooling along the line of progression for enhanced gait efficiency.
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.
