DESC: The Nike Air Tri-D Run II is a light, comfortable and stable running shoe for long runs. Open mesh and synthetic upper adds a comfortable and breathable fit. Soft density foam midsole cushions on heel strike, medium density foam guides for foot and firmer density foam contains the foot. BRS 1000 in the heel offers durability and enhanced flex grooves provide a smooth toe off. Wt. 10.2 oz.