The Boulevard CS (now replaced by the Britax Boulevard 70 CS, please see our review of the similar Advocate 70 here) is the latest convertible seat from Britax and touts “True Side Impact Protection” along with the new “Click & Safe” feature. This new innovation gives a loud click and tactile feedback when the caregiver has adjusted the harness strap system correctly. This model can be used rear-facing for children 5 to 35 pounds, and front-facing for children above 1 year old and from 20 to 65 pounds. The maximum standing height limit is 49 inches. On their website, Britax lists seated shoulder height limits of 10.5″ to 16″ while rear-facing and 12″-16″ front-facing. While similar to the Britax Marathon, the Boulevard CS also adds the innovative harness height adjustment system found in the standard Boulevard and Diplomat models. This allows parents to change the harness height to fit their child using a knob, even without removing the seat from the vehicle. I reviewed a pre-production model a while back, but was very excited to see a box of a production model in my foyer when I returned from a recent vacation!