Britax G4.1 Convertibles
Specifications 
Seat NameBritax Convertibles G4.1: Marathon/Boulevard
Expiration7 years
Rear Facing5-40 lbs
Up to 49"
Head 1" below the top of the fully extended headrest
Forward Facing20-65 lbs
Up to 49"
16.75" top harness slots
Booster LimitsN/A
Features 
Seat NameBritax Convertibles G4.1: Marathon/Boulevard
Fits Newborns
No Re-thread Harness
Premium Lower Anchor Connectors
Lock Offs
Anti-Rebound Bar
Additional Information 
CSFTL ReviewBritax Boulevard Review
Buy OnlineAmazon
Retail Price$290-$380