The Under Armour Illusion running shoe is made for runners with mildly flexible arches who desire structured cushioning and a smooth transition. FootSleeve™ ventilated internal sleeve, lined with UA Heatgear®. Stretch fit panels hug the foot and help eliminate sliding and extra bulk. DCE™ is an integrated system of Cartilage™, ArmourGuide™, ArmourBound™, and ArmourLastic™ in a working independent suspension system to provide cushioning and structure and direct energy into efficient propulsion. Cartilage1™ combines cushioning and structural components to reduce the impact of applied forces. ArmourGuide™ adds structure to the midsole perimeter to guide the foot into the neutral plane. Rigid Torsion Bridge helps prevent excessive roll-in at midstance. AmourLastic™ absorbs shock at critical impact zones in the heel and found in mapped zones of the forefoot to provide better propulsion into toe-off. ArmourBound™ cushioning increases platform surface area without adding weight. CR37™ carbon rubber in the heel strike zone. Allows for extended wear in high impact zones, regardless of surface. SR13™f solid rubber outsole allows for the best blend of flexibility and durability. BR77™ blown rubber in the center of the forefoot helps improve forefoot cushioning. Wt. 11.7 oz.