The Britax B-Safe 35 is similar in many ways to the Chicco KeyFit 30. There is more leeway for taller babies, but the width is narrower. The maximum user weight is 35 lb, and the maximum standing height is 32 inches.
As with the Chicco KeyFit 30, this model has a clip-in-and-clip-out function, with a fixed base in the car. People can adapt the carrier to comply with different stroller bases when they use it outside of the car.
The Britax B-Safe 35 has an adjustable shoulder harness, making it suitable for babies of different sizes.