A cartridge for a razor comprising a housing comprising: first and second opposed end portions (25, 27) spaced apart in a lateral direction of the cartridge, which lateral direction is parallel to one or more blades provided in the housing; front and back portions (21, 23) spaced apart in a longitudinal direction of the cartridge; a structure defining at least one of the front portion or the back portion comprising: a plurality of first protrusions extending from a base of the structure, the first protrusions having a direction of elongation in a longitudinal direction, each of the first protrusions defining: a width in the lateral direction; a length in the longitudinal direction; a height in a Z-direction, wherein the Z-direction is perpendicular to both the lateral and longitudinal directions; and a peak at a highest point of a tip of the protrusion as measured in the Z-direction, the peak located at a first distance greater than zero from the base of the structure; a plurality of second protrusions extending from the base of the structure, the second protrusions having a direction of elongation in the longitudinal direction, each of the second protrusions defining: a width in the lateral direction; a length in the longitudinal direction; a height in the Z-direction; and a peak at a highest point of a tip of the protrusion as measured in the Z-direction, the peak located at a second distance greater than zero from the base of the structure, wherein the first distance is greater than the second distance such that the heights of the plurality of first protrusions are greater than the heights of the plurality of second protrusions; wherein one or more of the first protrusions are positioned between at least one set of adjacent ones of the second protrusions. first and second opposed end portions (25, 27) spaced apart in a lateral direction of the cartridge, which lateral direction is parallel to one or more blades provided in the housing; front and back portions (21, 23) spaced apart in a longitudinal direction of the cartridge; a structure defining at least one of the front portion or the back portion comprising: a plurality of first protrusions extending from a base of the structure, the first protrusions having a direction of elongation in a longitudinal direction, each of the first protrusions defining: a width in the lateral direction; a length in the longitudinal direction; a height in a Z-direction, wherein the Z-direction is perpendicular to both the lateral and longitudinal directions; and a peak at a highest point of a tip of the protrusion as measured in the Z-direction, the peak located at a first distance greater than zero from the base of the structure; a plurality of second protrusions extending from the base of the structure, the second protrusions having a direction of elongation in the longitudinal direction, each of the second protrusions defining: a width in the lateral direction; a length in the longitudinal direction; a height in the Z-direction; and a peak at a highest point of a tip of the protrusion as measured in the Z-direction, the peak located at a second distance greater than zero from the base of the structure, wherein the first distance is greater than the second distance such that the heights of the plurality of first protrusions are greater than the heights of the plurality of second protrusions; wherein one or more of the first protrusions are positioned between at least one set of adjacent ones of the second protrusions. a width in the lateral direction; a length in the longitudinal direction; a height in a Z-direction, wherein the Z-direction is perpendicular to both the lateral and longitudinal directions; and a peak at a highest point of a tip of the protrusion as measured in the Z-direction, the peak located at a first distance greater than zero from the base of the structure; a plurality of second protrusions extending from the base of the structure, the second protrusions having a direction of elongation in the longitudinal direction, each of the second protrusions defining: a width in the lateral direction; a length in the longitudinal direction; a height in the Z-direction; and a peak at a highest point of a tip of the protrusion as measured in the Z-direction, the peak located at a second distance greater than zero from the base of the structure, wherein the first distance is greater than the second distance such that the heights of the plurality of first protrusions are greater than the heights of the plurality of second protrusions; wherein one or more of the first protrusions are positioned between at least one set of adjacent ones of the second protrusions. a width in the lateral direction; a length in the longitudinal direction; a height in the Z-direction; and a peak at a highest point of a tip of the protrusion as measured in the Z-direction, the peak located at a second distance greater than zero from the base of the structure, wherein the first distance is greater than the second distance such that the heights of the plurality of first protrusions are greater than the heights of the plurality of second protrusions; wherein one or more of the first protrusions are positioned between at least one set of adjacent ones of the second protrusions.