The Britax car seat bundle includes the Poplar convertible car seat and the Grow with You click-tight harness-2-booster car seat to cover your child's needs from infant through big kid. The Poplar starts rear-facing supporting infants up to 50 lbs with a slim, space-saving 17" design made to potentially fit 3 seats across. It features Britax's patented ClickTight installation system and 14-position harness for easy install and fit adjustment. Once your child outgrows rear-facing limits, it converts to forward-facing use. The Grow with You transitions from a forward-facing 5-point harness supporting toddlers to a belt-positioning booster for big kids. Its ClickTight system, 9-position harness and headrest allow easy install and fit customization. The harness can tuck away when your child is ready for booster mode. Both car seats provide trusted Britax safety through design innovations like SafeCell technology to absorb crash energy. Their naturally flame retardant fabrics have no added chemicals. With stages covering rear-facing infant to big kid booster, this bundle offers a comprehensive 2-in-1 car seat solution designed to grow with your child over time with convenient features like machine-washable covers, cup holders and comfort pads.