Rear-Facing Convertible With Seat Belt And Locking Clip

Installing BRITAX ROUNDABOUT 55, MARATHON 70, BOULEVARD 70, BOULEVARD 70 CS, and ADVOCATE 70 CS Convertible Car Seats rear facing using the vehicle lap/shoulder belt and one lock-off. These instructions apply to USA convertible seats manufactured on or after October 5, 2010. **Refer to your user guide for complete installation instructions.

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