ASICS Womens Gt 1000 Running Black Women's Shoes Review

100% Synthetic. Imported. Rubber sole. Impact Guidance System (I.G.S) (Running) : ASICS design philosophy that employs linked componentry to enhance the foot's natural gait from heel strike to toe-off. Rearfoot and Forefoot GEL Cushioning Systems: Attenuates shock during impact and toe-off phases, and allows movement on multiple planes as the foot transitions through the gait cycle. SpEVA Midsole: Material Improves bounce-back characteristics and decreases midsole breakdown. Guidance Line: Vertical flex groove decouples the tooling along the line of progression for enhanced gait efficiency. Guidance Line Midsole Technology: Vertical flex groove decouples the tooling along the line of progression for enhanced gait efficiency. The black specks on the medial side of the midsole are intentional and identifies a section of the shoe in which a technological feature exists. These black marks are not a defect.