Women's Running Shoes Under Armour Spectre. Train for power and results in the Under Armour Spectre. Stretch fit panels hug the foot and help eliminate sliding and extra bulk. ArmourLastic is a more dense EVA that absorbs shock in areas of heavy, repetitive stress found in mapped zones of the forefoot to provide better propulsion from into toe-off. ArmourGuide ensures efficient foot-strike guidance from impact to propulsion. ArmourBound delivers maximum responsive cushioning. SR13 solid rubber outsole allows for the best blend of flexibility and durability.