The Brooks Addiction 7 running shoe features the support required by runners with low or flat arches, along with the control, stability and cushioning known and loved by severe over-pronators. Air mesh upper with synthetic overlay materials, Internal Support Saddle. Heel HydroFlow® ST-XL and forefoot Hydroflow® provides one of the best cushioning systems in footwear. Full-length S-257™ midsole offers excellent energy return and cushioning on every stride. Extended Progressive Diagonal Rollbar (PDRB). High-density carbon rubber HPR™ Plus increases traction and outsole durability. Wt. 12.7 oz.