All4Stagesâ„¢ Slim 4-in-1 Convertible Car Seat Evenflo CS400112496C

One Car Seat for Every Stage

Looking for one car seat that will take your child from birth through the booster seat years? The All4Stagesâ„¢ Slim 4-in-1 Convertible Car Seat grows with your child for up to 10 years, thanks to its four modes of use.

Its slim design, measuring just 43 cm (16.9 in.) wide, maximizes space in the back seat and may even allow three car seats to fit side by side, depending on your vehicle's configuration.

4 Modes of Use

• Rear-Facing: 1.8 to 18.1 kg (4 to 40 lb)
• Forward-Facing: 13.6 to 29.5 kg (30 to 65 lb)
• High-Back Booster: 18.1 to 45.4 kg (40 to 100 lb)
• Backless Booster: 18.1 to 54.4 kg (40 to 120 lb)

Easy Installation and Convenient Adjustments

The SecureTightâ„¢ system makes secure installation easier, requiring up to 50% less effort. The 12-position adjustable headrest and no-rethread harness allow you to easily adjust the seat as your child grows, using just one hand.

For optimal comfort and a better fit in your vehicle, the car seat also offers:

• 4 recline positions in rear-facing mode
• 2 recline positions in forward-facing mode

Designed to Meet Rigorous Safety Standards

The All4Stagesâ„¢ Slim meets or exceeds all applicable federal safety standards, including the federal side-impact standards in effect as of June 2025. It also undergoes structural integrity, rollover and temperature testing.

ParentLink® Installation Support

For added peace of mind, ParentLink® customer support experts provide real-time online assistance. Live video support with a certified child passenger safety technician may also be available to guide you through installing the car seat in your vehicle.