KidShortlist
Graco · High-back booster

Graco Slimfit3 LX

Based on 1 independent scored test: Insurance Institute for Highway Safety (IIHS) (2024).

Tested for US & Canada
45
Shortlist score
Fair
#223 of car seats for US & Canada
Single test

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.

Insurance Institute for Highway Safety (IIHS) US · Lab test
IIHS booster ratings: new booster models for 2024 (released Jan 24, 2024) · highback
CHECK FIT
Check Fit
Our scale45
weight 1.00
Tested model #2137840; results also apply to 2137839, 2139663; seat type: Highback only; also on final IIHS ratings list (https://www.iihs.org/api/boosters/all-ratings); rating covers booster-mode belt fit only (IIHS does not rate harness modes)
View on iihs.org ↗

Top-ranked alternatives

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

KidShortlist

We don't test products ourselves. Every score here comes from an independent tester and links back to it. We combine 4,061 results from 26 sources.

Read before buying

Several testers are paywalled, so we only include what they publish openly. Models change and get recalled. Check the tester's own page and the retailer listing before you buy.

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