It has been updated with a new full length segmented crash pad for ultra smooth heel to toe transitions the addiction 12 maintains its generous dna focused ride for cushioning and support that adapts to your needs and added more in shoe comfort like a better sockliner and an asymmetrical upper with suede overlays brooks dna midsole adapts to your stride for custom cushioning and stability with a full length segmented crash pad to create smooth heel to toe transition with every step moisture