Purchased incorrect size. Worn a few times. Smoke free home. Engineered knit upper: Offers a supportive and comfortable foothold. 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. The sockliner's sustainable dyeing process helps reduce overall water usage by approx. 33% and carbo: Attenuates shock during impact and toe-off phases, and allows movement in multiple planes as the foot transitions through the gait cycle. FLYTEFOAM Technology: Provides lightweight cushioning.