The New Balance 858 is a high mileage running shoe with a dual-density medial post to accommodate the moderate-to-severe overpronator. Lightweight and supportive synthetic/mesh upper. ACTEVA® midsole with ABZORB SBS®. Stability Web® offers superior midfoot support while reducing overall weight. Extended Web delivers exceptional stability and pronation control. N-Lock® enhances midfoot support. Full-length ABZORB® strobel board, 360 degree reflectivity. Solid rubber N-Durance® outsole adds maximum durability in high wear areas. Wt. 13.4 oz.