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SlimFit3 LX 3-in-1 Car Seat

Rated 4.7 out of 5
839 Reviews|, Answered Questionsor
$
299.99
Free shipping & returns for Babylist orders $45+
color
Kunningham
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1

Overview

Highlights

  • Fits child between 5-100 lbs
  • Stages: Infant, Convertible, High Back/Belt Positioning Booster
  • Does not rotate
  • Comes with two cup holders

Description

This Graco car seat is their slimmest design. It fits three car seats across in your back seat (in every configuration), saving space without compromising safety.

The narrow all-in-one design grows with little ones from rear-facing harness (5-40 lbs) to forward-facing harness (26.5-65 lbs) to highback booster (40-100 lbs).

Integrated belt lock-off makes for easy vehicle seat belt installation in forward-facing mode, and allows you to position seats to maximize space with three across.

Graco’s exclusive push-button InRight LATCH provides an easy, one-second attachment with an audible click to help ensure secure installation.

The No-Rethread Simply Safe Adjust Harness System allows you to adjust the height of the headrest and harness to ten positions with just one motion for just the right fit. Adjust the four-position recline for a better installation and a comfortable ride.

The Rapid Remove cover comes off in 60 seconds, without uninstalling the seat or removing the harness, and it’s machine washable.

Breathable mesh AirFlow channels provide improved ventilation to keep kiddos cool and comfortable. Two cup holders are designed to work with the three-across configuration to keep drinks and snacks close at hand.

Fuss-free harness storage pockets conveniently hold the harness out of the way while children get in and out. Removable, plush head and body inserts also keep baby feeling cradled and comfortable.

The steel-reinforced frame provides strength and durability for years of use, and EPS energy-absorbing foam provides effective impact energy management.

For peace of mind, it’s Graco ProtectPlus Engineered. This is a combination of the most rigorous crash tests that helps to protect passengers in frontal, side, rear and rollover crashes.

What we  about it

Safely fits three across in your back seat.

Details

  • Stages: Infant, Convertible, High Back/Belt Positioning Booster
  • Overall Dimensions: 24.5” (H) x 16.7” (W) x 20.7” (D)
  • Product Weight: 19.2 lbs
  • Rear Facing Capacity: 5-40 lbs, Max 49”
  • Forward Facing Capacity: 26.5-100 lbs, Max 57”
  • Number of Recline Positions: 4
  • Number of Head Rest Positions: 10
  • Number of Crotch Strap Positions: 3
  • Car Seat Features:
    • Level Indicators
    • Harness Holders
    • No-Rethread Harness
    • Fits Three Across
  • Number of Cup Holders: 2
  • What’s Included: Cup Holder
  • Cleaning and Care:
    • Machine-washable seat cushion
  • Certifications: Meets or exceeds US Federal Motor Vehicle Safety Standard 213 (US FMVSS 213); Side-impact tested according to FMVSS 213a with the built-in 5-point harness system
  • Manufacturer’s Warranty: 1 Year Limited

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Customer reviews

839 Ratings
4.7out of 5
839 Ratings

Rated 5 stars by 84% of reviewers

Rated 4 stars by 11% of reviewers

Rated 3 stars by 2% of reviewers

Rated 2 stars by 2% of reviewers

Rated 1 star by 2% of reviewers

1-10 of 839 Reviews
Rated 5 out of 5
Love this car seat
This review was collected as part of a promotion
I originally purchased this carseat in 2024 when my daughter went from an infant carseat to a convertible carseat. Recently we were in an accident where the rear of the car took the biggest hit. Long story short, her seat needed to be replaced, so naturally we re-purchased this model since it had kept her safe and basically injury free from the impact. We loved the slim profile and the mesh vents before, but we have a whole new appreciation for the durability and safety of this seat.
Jan 25, 2026
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Rated 5 out of 5
Great size car seat
This review was collected as part of a promotion
Excellent car seat ! Love how it fits in car beside other seats
Jan 16, 2026
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Rated 5 out of 5
Great car seat!
This review was collected as part of a promotion
We love this car seat and how much room it gives us in our car. My only complaint is installing it rear facing for infants. I find it a bit challenging. I'd recommend this more for children over the age of 2.
Jan 14, 2026
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This review was collected as part of a promotion
It was easy to install and fits my 5 and 2 year olds perfectly. Helped us fit 3 across.
Jan 12, 2026
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Rated 5 out of 5
Great Slim Car Seat.
This review was collected as part of a promotion
The slimmest model you can find in the market. Yes, this will fit 3 across, which wasn't the main reason we bought this as we only have 1 child. We bought this because we have a small car and didn't want the back seat to be taken over by 1 car seat. It is also very light, easily removeable and to install with the click in latch system. The meshed materials also keeps the child cool and happy in long car ride. We have taken this car seat in 3 international trips (Croatia, Mexico, Italy)
Jan 12, 2026
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Rated 5 out of 5
Great car seat
This review was collected as part of a promotion
This is my 4th Slimfit3 and 8th Graco car seat. Easy to adjust and install. I've bought nothing but Graco since one of their seats saved my family in a rollover car accident by stopping the roof from fully collapsing several years ago.
Jan 9, 2026
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Rated 5 out of 5
Bargain Shopper
This review was collected as part of a promotion
Comfortable for baby, attractive design, and easy to secure baby in.
Jan 8, 2026
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Rated 5 out of 5
Finally a way to have 3 kids fit in back seat!
This review was collected as part of a promotion
Finally all 3 kids can fit comfortably in the back seat of my small SUV! No complaints from the kids after a couple of 14 hrs trips (well, plenty of complaints, but none that related to the seats or to their comfort!)
Jan 7, 2026
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Rated 5 out of 5
Fit three in a compact car!
This review was collected as part of a promotion
This is my second one and it has been working great for us! Easy to put on and off to wash and gives us the option to put three car seats in a compact car. We once had to give our friend’s four year old a ride and we fit two of the slims and one reg size Graco car seat no problem!
Jan 7, 2026
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Rated 5 out of 5
Perfect for growing family!
This review was collected as part of a promotion
I wish I just bought these to begin with. I bought different carseats, but the SlimFit3 LX 3in1 makes the most sense if you plan on having three across in most cars!
The quality makes me feel like my babies are extra safe and relieved my anxiety!

If you are thinking about best choices with a growing family this is it!
Jan 7, 2026
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