Head to the trails in style and comfort with the ultimate protection of the Altra Zero Drop Footwear Superior 2 shoe! ; A versatile, lightweight trail running shoe. ; Quick-Dry air mesh upper. ; FootShape toe box lets your toes relax and spread out in uphill and downhill trail conditions. ; 5 mm contour footbed for all-day wear. ; Removable StoneGuard rock protection plate protects your feet from sharp rocks and can be removed when being used on less demanding terrain. ; Cushioned Zero Drop platform helps you maintain proper form across long distances. ; EVA, A-Bound Blend midsole with InnerFlex. ; TrailClaw outsole technology features canted lugs beneath your metatarsals for ultimate gripping in the gnarliest of terrain. ; Last: PFS2-M/PFS-W ; Total Stack Height (total thickness of midsole and outsole underfoot): 21 mm ; Imported. Measurements: ; Weight: 7 oz ; Product measurements were taken using size 8, width B – Medium. measurements may vary by size.