Shaving razor cartridge

A shaving razor cartridge comprising:

• a housing that extends between a front end of the shaving razor cartridge and a rear end of the shaving razor cartridge, the housing comprising:
• a blade support portion positioned between the front end and the rear end and comprising:
• a cap;
• and
• a guard spaced from the cap and cooperating with the cap to define a shaving plane;
• and
• a handle interface portion positioned between the front end and the rear end and comprising:
• a rear wall comprising a lower surface and an interior surface;
• and
• a front wall comprising a lower surface and an interior surface and spaced from the rear wall;
• a first sidewall that extends between the rear wall and the front wall and comprises an interior surface;
• a second sidewall that extends between the rear wall and the front wall comprises an interior surface, the second sidewall being spaced from the first sidewall;
• and
• at least one razor blade disposed in the blade support portion between the cap and the guard, wherein:
• the front wall intersects each of the first sidewall and the second sidewall at a pair of front corners;
• the rear wall intersects each of the first sidewall and the second sidewall at a pair of rear corners;
• the lower surfaces cooperate to define a lower opening;
• the front wall, the rear wall, the first sidewall, and the second sidewall cooperate to at least partially define a handle receptacle that extends to the lower opening;
• the rear wall is more proximate to the blade support portion than the front wall;
• one or more of the rear corners comprises a first cross-sectional moment of inertia;
• one or more of the rear wall, the first sidewall, and the second sidewall comprises a second cross-sectional moment of inertia adjacent to the rear corners;
• and
• the second cross-sectional moment of inertia is greater than the first cross-sectional moment of inertia.

A shaving razor cartridge comprising:

• a housing that extends between a front end of the shaving razor cartridge and a rear end of the shaving razor cartridge, the housing comprising:
• a blade support portion positioned between the front end and the rear end and comprising:
• a cap;
• and
• a guard spaced from the cap and cooperating with the cap to define a shaving plane;
• and
• a handle interface portion positioned between the front end and the rear end and comprising:
• a rear wall comprising a lower surface and an interior surface;
• and
• a front wall comprising a lower surface and an interior surface and spaced from the rear wall;
• a first sidewall that extends between the rear wall and the front wall and comprises an interior surface;
• a second sidewall that extends between the rear wall and the front wall comprises an interior surface, the second sidewall being spaced from the first sidewall;
• and
• at least one razor blade disposed in the blade support portion between the cap and the guard, wherein:
• the front wall intersects each of the first sidewall and the second sidewall at a pair of front corners;
• the rear wall intersects each of the first sidewall and the second sidewall at a pair of rear corners;
• the lower surfaces cooperate to define a lower opening;
• the front wall, the rear wall, the first sidewall, and the second sidewall cooperate to at least partially define a handle receptacle that extends to the lower opening;
• the rear wall is more proximate to the blade support portion than the front wall;
• one or more of the front corners comprises a first cross-sectional moment of inertia;
• one or more of the rear corners comprises a second cross-sectional moment of inertia;
• one or more of the front wall, the rear wall, the first sidewall, and the second sidewall comprises a third cross-sectional moment of inertia adjacent to the front corners;
• and
• the third cross-sectional moment of inertia is greater than each of the first cross-sectional moment of inertia and the second cross-sectional moment of inertia.