Train hard like the beast you are in the Brooks Beast ’16 running shoe. This breathable mesh shoe features an external heel counter and full-length Segmented Crash Pad for superior running support.Item # 518779Differential: 12 mmExtended Progressive Diagonal Rollbar (PDRB®)Extended Progressive Diagonal Rollbar® (PDRB)External heel counterFull-length S-257 CushsoleHeel CounterLace entryLinear platformLinear Platform™Mesh upperNo-sew upper constructionPadded tongue and collarS-257 CushsoleSegmented Crash PadSegmented Crash PadStrobel constructionStrobel ConstructionSuper DNASuper DNA MidsoleSynthetic overlayUltimate socklinerUltimate SocklinerStyle Number: 1102271D005, 1102272E005, 1102274Exxx, 1102274E005