Safety 1st SlimRide 4-in-1 Convertible Car Seat

4.6 stars out of 539 reviews
(4.6)|
539 ratings
Actual Color:Grey All Day
selected, Grey All Day, $169.00
London Fog, $169.00, Out of stock

Key item features

  • 4 modes of use: rear-facing (5–40 lbs., 19”–40”), forward-facing (30–65 lbs., 34.4”–49”), belt-positioning booster and backless booster (40–100 lbs., 43”–52”)
  • Fit 3 car seats across in standard back seats
  • Converts to backless booster with just one hand
  • Base features 5-position recline
  • Machine-washable and dryer-safe seat pad and infant inserts
  • Meets or exceeds federal safety standards
  • 2 removable and dishwasher-safe cup holders
  • 10-position headrest and harness adjust without rethreading
Current price is $169.00
Price when purchased online
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  • Free 90-day returns
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Comparison Chart:
Age GroupToddlerSafety 1st SlimRide 4-in-1 Convertible Car SeatInfantSafety 1st Grow and Go Sprint All-in-One Convertible Car Seat, Black Beauty IIToddlerSafety 1st SlimRide 4-in-1 Convertible Car Seat, Grey All Day, Infant & Toddler, UnisexToddlerSafety 1st TriMate All-in-One Convertible Car SeatInfantGraco Tranzitions 3-in-1 Harness Booster Car Seat, Proof, BlackToddlerSafety 1st Grow and Go All-in-One Slim Convertible Car Seat Rear Facing, (5-40 lbs), Forward Facing (30–65 lbs), High Back Booster Seat (40-100 lbs.), Green GablesToddlerSafety 1st Ellaris Convertible Car SeatInfantSafety 1st OnBoard FLX Infant Car SeatChildEvenflo EveryKid 3-in-1 Convertible Car Seat (Livingston Gray), Infant - 12 Years
Child Car Seat StyleConvertible Car SeatsSafety 1st SlimRide 4-in-1 Convertible Car SeatConvertible Car SeatsSafety 1st Grow and Go Sprint All-in-One Convertible Car Seat, Black Beauty IIConvertible Car SeatsSafety 1st SlimRide 4-in-1 Convertible Car Seat, Grey All Day, Infant & Toddler, UnisexConvertible Car SeatsSafety 1st TriMate All-in-One Convertible Car SeatHigh-Back Booster Car SeatsGraco Tranzitions 3-in-1 Harness Booster Car Seat, Proof, BlackConvertible Car SeatsSafety 1st Grow and Go All-in-One Slim Convertible Car Seat Rear Facing, (5-40 lbs), Forward Facing (30–65 lbs), High Back Booster Seat (40-100 lbs.), Green GablesConvertible Car SeatsSafety 1st Ellaris Convertible Car SeatInfant SeatSafety 1st OnBoard FLX Infant Car SeatConvertible Car SeatsEvenflo EveryKid 3-in-1 Convertible Car Seat (Livingston Gray), Infant - 12 Years
ColorGrey All DaySafety 1st SlimRide 4-in-1 Convertible Car SeatBlack Beauty IISafety 1st Grow and Go Sprint All-in-One Convertible Car Seat, Black Beauty IIGray All DaySafety 1st SlimRide 4-in-1 Convertible Car Seat, Grey All Day, Infant & Toddler, UnisexDark HorseSafety 1st TriMate All-in-One Convertible Car SeatProofGraco Tranzitions 3-in-1 Harness Booster Car Seat, Proof, BlackGreen GablesSafety 1st Grow and Go All-in-One Slim Convertible Car Seat Rear Facing, (5-40 lbs), Forward Facing (30–65 lbs), High Back Booster Seat (40-100 lbs.), Green GablesLondon BlueSafety 1st Ellaris Convertible Car SeatLake Blue 2Safety 1st OnBoard FLX Infant Car SeatLivingston GrayEvenflo EveryKid 3-in-1 Convertible Car Seat (Livingston Gray), Infant - 12 Years
Car Seat Facing DirectionConvertibleSafety 1st SlimRide 4-in-1 Convertible Car SeatConvertibleSafety 1st Grow and Go Sprint All-in-One Convertible Car Seat, Black Beauty IIConvertibleSafety 1st SlimRide 4-in-1 Convertible Car Seat, Grey All Day, Infant & Toddler, UnisexConvertibleSafety 1st TriMate All-in-One Convertible Car SeatForward FacingGraco Tranzitions 3-in-1 Harness Booster Car Seat, Proof, BlackConvertibleSafety 1st Grow and Go All-in-One Slim Convertible Car Seat Rear Facing, (5-40 lbs), Forward Facing (30–65 lbs), High Back Booster Seat (40-100 lbs.), Green GablesConvertibleSafety 1st Ellaris Convertible Car SeatRear FacingSafety 1st OnBoard FLX Infant Car SeatConvertibleEvenflo EveryKid 3-in-1 Convertible Car Seat (Livingston Gray), Infant - 12 Years
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Customer ratings & reviews

4.6 out of 5 stars
stars539 ratings211 reviews
How item rating is calculated

Reviews summary

Pros
  • : Features a 5-point harness system for added protection.
  • : Accommodates smaller vehicles and allows for multiple seats.
  • : Provides extra cushioning and padding.
  • : Allows for easy adjustments to different heights.
  • : Features cushioning for comfort and support.
Neutral
  • : Can be sturdy, but also cumbersome to carry.
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Showing 1-3 of 211 reviews

Aug 25, 2025
Gary
Item details
Color: Grey All Day
Sold and shipped byDorel Juvenile Group
5 out of 5 stars review

Verified Purchase

being an extra car seat I was looking for a reasonably priced one. because I have two grandchildren that often ride with me. this car seat has exceeded my expectations, my grandchild went from screaming and crying as soon as she was put into her other car seat to being happy and smiling and comfortable in her new one this one. as far as I'm concerned that's five stars for me.

Helpful?19LL0ZUJTMN61721454272
Nov 15, 2025
James
Item details
Color: Grey All Day
Sold and shipped byDorel Juvenile Group
5 out of 5 stars review

Verified Purchase

One Car Seat For All Stages Of Child Development.

This Is An All In One Car Seat That Will Be There For All Stages Of A Childs Life Needing A Car/Booster Seat. You Will Not Need To By Anything Else For Your Child To Ride In A Car Safely.

Helpful?19LL0ZUJTMN61721454272
Apr 2, 2025
Danixa
Item details
Color: London Fog
Sold and shipped byDorel Juvenile Group
5 out of 5 stars review

Verified Purchase

Comfy %26 well supported

Compared to the previous one from Sam's Club it doesn't compare. This has a weight to it so in my opinion; well built! It feels comfy and well supported. Glad I placed the order when I did cause the price sure went up and another plus that it can change modes as your baby grows. (Had to buy a cover to keep it clean %26 make it last to its full potential)

Helpful?19LL0ZUJTMN61721454272

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