There are 36 lugs on the outsole of adidas Response Trail Boost running shoes to help you meet and answer the demands of rough terrain. A unique midfoot strapping system is designed to ensure a secure fit during all of your movement. These shoes merge contemporary style and rugged capabilities.Upper: Unique midfoot strapping system ensures a secure fit on uneven terrain. Semi-bootie construction allows for ease of entry while still providing protection. Flat laces reduce irritation.Midsole: boost™ midsole provides unmatched energy return and superior cushioning. Three-quarter-length EVA cradle provides maximum support and durability while allowing full-length boost™ comfort.Outsole: Continental Rubber outsole delivers 21% more traction in dry conditions and 23% more traction in wet conditions. 36 lugs provide optimal traction in muddy and wet conditions.