From birth to booster, there’s only one car seat they’ll ever need: the All4Stages™ Slim+ 4-in-1
Convertible Car Seat. For busy parents on the go, the All4Stages car seat allows you to
seamlessly transfer between family cars or rentals for an easy, on-the-go solution. The
streamlined 16.9 in. footprint saves space for other backseat passengers or allows you to fit
three car seats across in your backseat. All4Stages Slim can be used for up to 10 years through
four different modes: Rear-Facing (4 – 40 lb), Forward-Facing (30 – 65 lb), High-Back Booster
(40 – 100 lb), and No-Back Booster (40 – 120 lb). The removable canopy helps shield your child
from the sun while rear-facing in the vehicle. Achieve a secure installation with up to 50% less
effort with SecureTight™. The 12-position headrest and no-rethread harness both adjust with
one hand. There are four rear-facing recline options and two forward-facing recline options for
optimal positioning and improved vehicle fit. Removeable cupholders and a snack tray provide
easy, portable snacking. The All4Stages Slim Car Seat achieves flexibility for both parents and
caregivers with a space-saving and easy-to-install design!
The All4Stages Slim+ 4-in-1 Convertible Car Seat meets or exceeds all applicable Federal Safety Standards as well as federal side impact standards effective in June of 2025 for children under 40 pounds. In addition to federally required testing, it is structural integrity tested, rollover tested and temperature tested.
If you need help installing your car seat, our ParentLink® Consumer Care Team offers help
online in real time. Get live video support with a certified car seat safety technician to assist with
proper vehicle installation, so you can drive with confidence.
Families have trusted Evenflo for more than 100 years for smart, innovative gear designed to
make life easier, safer and more comfortable at home and on the go. Let us help you save time
and find peace of mind, so you can focus on what matters most: your child
At a Glance
Child Weight
- Min. 4 lbs
- Max. 120 lbs
Product Weight
25.2 lbs
Modes of Use
Rear-Facing
Forward-Facing
High Back Booster
No Back Booster
Features
to booster with four modes: Rear-Facing (4 – 40 lb), Forward-Facing (30 – 65 lb), High-Back
Booster (40 – 100 lb), and No-Back Booster (40 – 120 lb)
passengers or allows you to fit three car seats across in your backseat — without sacrificing
safety, comfort or style
facing in the vehicle
SecureTight™
Overview
From baby to booster
From baby to booster, there’s only one car seat they’ll ever need: the
All4Stages Slim+ 4-in-1 Convertible Car Seat. The streamlined 16.9 in.
footprint saves space for other passengers or allows you to fit three car seats
in your backseat. All4Stages Slim can be used for up to 10 years through four
different modes. The removable canopy helps shield your child from the sun
while rear-facing in the vehicle. With SecureTight™, a 12-position headrest and
a no-rethread harness, your little one has everything they need for a safe and
comfortable ride!
What’s Included
Box Contents
Assembly Details
No assembly required.
Materials / Fabric
Polyester
Use & Care Instructions
Machine washable: Yes
Dimensions & Fit
Modes of Use
Forward-Facing
High Back Booster
No Back Booster
Dimensions Diagram
Child Fit Requirements
- Weight: 4 – 120 lbs
- Minimum Age: Birth
Rear-Facing Mode
- Rear-Facing Mode Weight Limitation: 4-40 lbs (1.8-18.1 kg)
- Rear-Facing Mode Height Limitation: 17-43 in. (43-109 cm)
- Rear-Facing Mode Fit Limitation: Top of head at least 25mm (1in) below the top of the child restraint headrest.
- Rear-Facing Mode Age Limitation: 0-4 years
Forward-Facing Mode
- Forward-Facing Mode Weight Limitation: 30-65 lbs. (13.6-29.4 kg.)
- Forward-Facing Mode Height Limitation: 35-49 in. (89-124 cm.)
- Forward-Facing Mode Fit Limitation: Child must be at least 2 years old. Top of the child’s ears are at or below the top of child restraint.
- Forward-Facing Mode Age Limitation: 2-6 years
High Back Booster Mode
- High Back Booster Mode Weight Limitation: 40-100 lbs. (18.1-45.3 kg.)
- High Back Booster Mode Height Limitation: 44-57 in. (112-145 cm.)
- High Back Booster Mode Fit Limitation: Child must be at least 5 years. Top of child’s ears are at or below the top of the booster seat head rest.
- High Back Booster Mode Age Limitation: 5 – 10 years
No Back Booster Mode
- No Back Booster Mode Weight Limitation: 40-120 lbs. (18.1-45.3 kg.)
- No Back Booster Mode Height Limitation: 44-60 in. (112-152 cm.)
- No Back Booster Mode Fit Limitation: Child must be at least 5yr old. Top of the child’s ears are at or below the top of the vehicle seat head rest.
- No Back Booster Mode Age Limitation: At least 5 yrs. Top of the child’s ears are at or below the top of the vehicle seat headrest.
Harness Booster Mode
- Harness Booster Mode Age Limitation: At Least 2 years old
Specifications
Product Measurements
- Assembled: 16.9″ W x 22″ D x 24.3″ H
- Package: 17.88″ W × 29.38″ H × 18.63″ D
- Product weight: 25.2 lbs
- Package weight: 26.00 lbs
Certifications
Warranty
90-day-limited
Key Features
- Slim Design
- GREENGUARD Gold Certified
- Side Impact Protection
- Easy Installation
- Rear-Facing Mode
- Forward-Facing Mode
- High-Back Booster Mode
- No-Back Booster Mode
- Multiple Modes of Use: Rear-Facing, Forward-Facing, High Back Booster, No Back Booster











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