Ease of use: The Safety 1st Ellaris is fairly easy to use, though it lacks some parent-friendly features, like a lock-off mechanism and push-on LATCH connectors. There are no bubble recline indicators, just a decal line that you’ll need to align parallel with the ground to find the proper recline for your child’s weight. The harness is easy to adjust, but it only has five height positions. And removing the seat cover for cleaning first requires removing the harness straps. Our experts noted that the LATCH and seatbelt installations were listed together in the manual, which can cause confusion among new parents installing a car seat for the first time.
Fit-to-vehicle LATCH: The Ellaris offers a good fit when used with LATCH in the forward-facing position, but you’ll need to remove the seat cover at various points to properly thread the strap or pull the LATCH belt for a secure fit. In the rear-facing position, we had more difficulty getting a secure fit across our fleet of test vehicles with this car seat.
Fit-to-vehicle Belt: We were able to get an excellent fit when using the seatbelt for installation in the forward-facing position, and a good fit in rear-facing position too. But the belt path is narrow in some orientations, which can make it difficult to thread and tighten the belt, especially if you have larger hands.
Crash protection: In CR’s crash test protocol, the Safety 1st Ellaris performed very well and did not exhibit significant structural integrity issues.