Safety 1st · Harness-to-booster

Safety 1st Grand 2-in-1

Based on 2 independent scored tests: BabyGearLab (2024), NHTSA (National Highway Traffic Safety Administration) Car Seat Ease of Use Ratings (2021).

Tested for US & Canada

Shortlist score

Fair

#220 of car seats for US & Canada

Medium confidence

Where to buy

This seat is certified for US & Canada. Car seats may only be used in the market they're approved for, so we don't link to shops in Czechia.

Test results

Each score as the tester published it, converted to our 0–100 scale. Weight is how much the result counts towards the score.

BabyGearLab US · Editorial review

BabyGearLab best booster seat review, 2024

50%

Our scale50

weight 0.60

Crash test: 4.7
Ease of use: 4.9
Weight size: 7.2
Comfort: 4.5
Quality: 4.0

Listed at $80 metric weights: Crash Test (35%); Ease of Use (25%); Weight/Size (15%); Comfort (15%); Quality (10%); overall listed on https://www.babygearlab.com/topics/vehicle-safety/best-booster-seat/ratings; review last modified 2024-01-26

View on babygearlab.com ↗

NHTSA (National Highway Traffic Safety Administration) Car Seat Ease of Use Ratings US · Government / institute

NHTSA Car Seat Ease of Use Ratings, 2021 · forward-facing mode

3/5★

3 stars

Our scale60

weight 0.24

Labels: 3
Instructions: 4
Securing child: 3
Vehicle installation features: 3

NHTSA Ease of Use rating for Forward-Facing mode (5-pt); seat type Combination; model #BC149-EZA; evaluated seat manufactured 2021-05-25; test_year = year of manufacture of the evaluated seat (NHTSA does not publish a rating date in the data)

View on api.nhtsa.gov ↗

1 older or duplicate result not counted

NHTSA (National Highway Traffic Safety Administration) Car Seat Ease of Use Ratings US · Government / institute

NHTSA Car Seat Ease of Use Ratings, 2021 · booster mode

2/5★

2 stars

Our scale40

not counted

Not counted: Another configuration scored higher in the same test.

Labels: 1
Instructions: 5
Securing child: 2
Vehicle installation features: 1

NHTSA Ease of Use rating for Booster mode (Highback); seat type Combination; model #BC149-EZA; evaluated seat manufactured 2021-05-25; test_year = year of manufacture of the evaluated seat (NHTSA does not publish a rating date in the data)

View on api.nhtsa.gov ↗

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How we turn these into one number: methodology. Tested 2021–2024.