Under Armour Women's Speed Swift 2 Running Shoe 100% Textile/Synthetic Imported Rubber sole Shaft measures approximately 2.6" from arch Lightweight, breathable mesh delivers increased ventilation with bonded film at midfoot for increased durability EVA sockliner for added underfoot comfort One-piece EVA foam midsole for a lightweight, responsive ride Solid rubber outsole covers high impact zones for greater durability with less weight Offset: 6 mm