Safety 1st SlimRide EverSlim User manual

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(US and Canada Only.
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Replacement Parts List
(on select models)
For parts availability and questions, call, text, or chat.
If requested color is not available, similar color
will be substituted.
Applicable tax and shipping & handling
will also be added.
• Buckle Assembly
• Non-Magnetic Chest Clip
• SecureTech™ Magnetic
Chest Clip
• Seat Pad Set
• Removable Cup Holder(s)
• Cup Holder Snack Lid
• Shoulder Belt-Positioning Clip
• Top Tether
• Locking Clip
• Instructions

SlimRide
EverSlim
All-in-One
Convertible
Car Seat
KEEP INSTRUCTIONS FOR FUTURE USE.
Read all instructions before
using this car seat.
WARNING Failure to follow the
warnings on the labels and in the
instruction manual can result in
serious injury or death
to your child.
4358-8302A
11.30.22
Your model may look dierent than one shown on cover.

Your child’s safety is worth the time it will take to read
and follow these instructions.
Ready? Let’s go!
Pages 1-4 will introduce you to the parts of the car seat.
The Back Cover of this Manual has our contact
information.
If at any point you would like assistance, please feel free to
reach out to us.
Measure
Your Child Adjust Car Seat to
Fit Your Child
Welcome to the Safety 1st Family!
Thank you for choosing this car seat, also known as a
child restraint!
To help you get started using your child’s new car seat,
here are the 4 main tasks you’ll need to complete.

©2022 Dorel Juvenile Group, Inc. Safety 1stTM and the Safety 1st logo and design are
trademarks of Dorel Juvenile Group, Inc. [phone] www.safety1st.com. Styles and
colors may vary. Los estilos y los colores pueden variar. Made in CHINA. Hecho en CHINA.
Distributed by (distribuido por) Dorel Juvenile Group, Inc., 2525 State St., Columbus, IN
47201-7494. Dorel Juvenile Canada, 2233 Argentia Road, Suite 110, Mississauga, ON L5N
2X7. Importado y Distribuido en Chile por: Comercial e Industrial Silfa S.A. - San Ignacio
0201 / Parque Industrial Portezuelo Quilicura, Santiago Chile. Fono (562) 2339 9000.
En Perú por: Comexa S.A. - Los Libertadores 455 – San Isidro, Lima – Perú. Fono (511)
4469014. En Centro América, Caribe y Ecuador por: Best Brands Group S.A. – Av. Balboa,
Bay Mall Plaza, Planta Baja, local 9, Panamá. - Fono: [phone]. En Colombia por:
Baby Universe S.A.S. - Vía 40 No. 77-29, Barranquilla,Colombia - Fono: [phone]
Importador: DJGM, S.A. DE C.V. Gabriel Mancera No. 1041 Col. Del Valle, Benito Juárez C.P.
03100 México, Ciudad de México R.F.C. DJG140305GN9
Tel. [phone]
Install Car Seat into
Your Vehicle
Secure Your Child
in Car Seat

Contents
1 Getting Started
1 Parts of Car Seat
3 Accessory Use
5 Choosing Car Seat Mode
7 Rear-Facing Section
9 Rear-Facing Child Fit
11 Rear-Facing Vehicle Install
18 Forward-Facing Section
20 Forward-Facing Child Fit
22 Forward-Facing Vehicle Install
29 Securing Child in Car Seat
32 Booster Seat Section
33 Storing Harness System
38 Booster Seat Child Fit
40 Backed Booster Seat Use in Vehicle
43 Converting to Backless Booster Seat Mode
47 Backless Booster Seat Use in Vehicle
51 Making Adjustments to Car Seat
51 Changing Headrest/Harness Height
53 Changing Buckle Position

55 Harness Adjustment for Smaller
Infants
58 Reclining Car Seat
59 Wash & Care
59 Removing Seat Pad Set & Cleaning Parts of
Car Seat
63 Installing Seat Pad Set
65 LATCH & Vehicle Belt Information
65 LATCH: Lower Anchor Belt
67 Vehicle Belts
71 Top Tether
72 Safety Information
72 Child Restraint Use
73 Vehicle Seating Position
74 Installation in Vehicle
75 Replacement & Expiration
76 Registration & Safety Notices
77 Aircraft Information
78 Warranty

1Parts of Car Seat
Your model may look dierent than one shown.
CC303 SlimRide -
No cup holder snack lid, no
magnetic chest clip
CC343 EverSim -
Has cup holder snack lid, &
has magnetic chest clip
Harness System
Chest Clip
Buckle
Buckle
Slots
Harness Straps
Shoulder
Harness Slots
CC303 SlimRide -
No cup holder snack lid, no
magnetic chest clip
CC343 EverSim -
Has cup holder snack lid, &
has magnetic chest clip
Removable
Cup Holders*
Buckle
Cover*
Harness
Release
Lever
Harness
Adjustment
Strap
Head
Pillow*
Toddler
Pillow*
CC303 SlimRide -
No cup holder snack lid, no
magnetic chest clip
CC343 EverSim -
Has cup holder snack lid, &
has magnetic chest clip
Back View
Adjustable
Headrest
Headrest
Adjustment
Handle
Harness
Covers*
CC303 SlimRide -
No cup holder snack lid, no
magnetic chest clip
CC343 EverSim -
Has cup holder snack lid, &
has magnetic chest clip
SlimRide Model
EverSlim Model
Removable Cup Holder Snack Lid*
SecureTech™ Magnetic Chest Clip

*See pages 3-4 for Accessory Use.
2
CC303 SlimRide -
No cup holder snack lid, no
magnetic chest clip
CC343 EverSim -
Has cup holder snack lid, &
has magnetic chest clip
CC303 SlimRide -
No cup holder snack lid, no
magnetic chest clip
CC343 EverSim -
Has cup holder snack lid, &
has magnetic chest clip
CC303 SlimRide -
No cup holder snack lid, no
magnetic chest clip
CC343 EverSim -
Has cup holder snack lid, &
has magnetic chest clip
Forward-
Facing
Belt Path
Rear-Facing
Level Line
(on label)
Base
Shell
(Car Seat)
Tether
Storage
Attachment
Instruction
Manual Storage
Tether
Strap
Adjuster
Tether
Strap
CC303 SlimRide -
No cup holder snack lid, no
magnetic chest clip
CC343 EverSim -
Has cup holder snack lid, &
has magnetic chest clip
Harness Strap
Splitter Plate
LATCH: Lower
Anchor Belt &
Storage Attachments
Backless Belt-
Positioning Booster
Belt Path
Rear-Facing
Belt Path
Backed Belt-
Positioning Booster
Belt Path
CC303 SlimRide -
No cup holder snack lid, no
magnetic chest clip
CC343 EverSim -
Has cup holder snack lid, &
has magnetic chest clip
Backless Booster Only
Instruction Sheet Storage
(under Backless seat pad)

3Accessory Use
Removable Cup Holder(s)
(on select models)
For Use in All Modes
The cup holder(s) is top-rack
dishwasher safe.
To attach, push the cup
holder post into the end of the
armrest, firmly, until you feel a
click. Pull out gently to make sure it is secure. Repeat for other side.
To remove, pull out on the cup holder.
Head Pillow & Body
Pillow
(on select models)
Only For Use in
Rear-Facing Mode
The head and body pillows
MUST be used together.
To remove head pillow, from the back of the head pillow gently pull
the fabric tabs out of the seams in the headrest fabric.
To attach head pillow,slide the fabric tabs into the slots in the seams
of the headrest fabric seams.
To remove body pillow,
undo the buckle & then pull it
through the slot in the pillow.
Pull pillow off of seat.
To attach body pillow,feed
buckle into matching buckle
slot in pad.

4
Buckle Cover
(on select models)
For Use in Rear-Facing
Mode or Forward-Facing
Mode
To remove, undo the buckle and pull the buckle cover off of the
buckle.
Shoulder Belt Positioning Clip
Only for Use in Backless Booster
Mode
Note: Belt clip may be stored in bag
with cup holder & instruction manual
in shipment.
See page 45 for storage location in
car seat base.
Harness Covers
(on select models)
For Use in Rear-Facing
Mode or Forward-Facing
Mode
The harness covers help provide comfort to your child’s neck.
To remove, undo the fasteners and pull the harness covers off of the
harness straps.
Cup Holder Snack Lid
(on select models)
For Use in All Modes
The cup holder lid is top-rack dishwasher
safe.
To install, fit front of cup holder lid around
cup holder. Then press down around the top
edges to secure the lid. To remove, pull off of the cup holder.

Your child’s height, weight, and age determine how the car seat
should be placed in the vehicle.
Children vary widely in body size, shape, and temperament—please
consult your doctor before switching between any modes within
the limits and fit requirements of the car seat.
State Laws
Please be certain to follow your state’s laws regarding car seat use.
American Academy of Pediatrics Recommendations
Infants and Toddlers
Should ride in a rear-facing car seat as long as possible, until they
reach the highest weight or height allowed by their car seat.
Toddlers and Preschoolers
Once they are facing forward, children should use a forward-facing car
seat with a harness for as long as possible, until they reach the height
and weight limits for their car seats.
School-Aged Children
Once they have outgrown their forward-facing car seat, children should
use a belt-positioning booster seat until the vehicle’s lap and shoulder
seat belt fits properly. This is often when they have reached at least 4
feet 9 inches in height and are 8 to 12 years old.
Older Children
All children younger than 13 years should be restrained in the rear
seats of vehicles for optimal protection.
Measure your child’s weight and height
(DO NOT guess) before choosing this car seat’s mode.
Choosing Car Seat Mode
WARNING:
5

6
Backed & Backless Booster Seat Modes
40-100 lb (18.1-45.4 kg) and
43-52 in. (110.1-132.1 cm)
Booster Seat Section
PAGE 32
Storing Harness System
PAGE 33
Booster Seat Child Fit
PAGE 38
Backed Booster Seat Use in Vehicle
PAGE 40
Converting to Backless Booster Seat Mode
PAGE 43
Backless Booster Seat Use in Vehicle
PAGE 47
Forward-Facing Mode
22-65 lb (10.1-29 kg) and
29-49 in. (73.6-125 cm) and
at least 1 year old
Forward-Facing Section
PAGE 18
Forward-Facing Child Fit & Vehicle Install
PAGE 20-22
Rear-Facing Mode
5-40 lb (2.3-18 kg) and
19-40 in. (48-101.6 cm)
Rear-Facing Section
PAGE 7
Rear-Facing Child Fit & Vehicle Install
PAGE 9 & 11

7
In this car seat, your child can remain Rear-Facing until they
outgrow any one of the following:
• Weight Limit: 40 lb (18 kg); OR
• Height Limit: 40 in. (101.6 cm); OR
• Rear-Facing Child Fit requirements, see pages 9-10.
Before installing the car seat in your vehicle, check your child’s fit in
the car seat.
This way you won’t have to redo the vehicle installation to make
adjustments to the car seat.
Rear-Facing Child Fit & Vehicle Install: Pages 9-17
Rear-Facing Section
5-40 lb (2.3-18 kg) and
19-40 in. (48-101.6 cm)
Children under 1 year of age MUST ride Rear-Facing.

NEVER install a rear-facing child restraint in the
front seat of a vehicle equipped with an active
frontal airbag.
DO NOT use the tether for rear-facing mode.
Secure the tether strap hook to its storage attachment.
DO NOT use the lower anchor belt along with the vehicle lap or
lap/shoulder belt.
DO NOT fasten multiple lower anchor hooks on the same lower
anchor bar in the vehicle.
Check the vehicle belt or the lower anchor belt before each
use. Use ONLY if the belt can be tightened properly and locked
securely in place.
Even when unoccupied, this child restraint MUST be firmly
secured to the vehicle with the lower anchor belt or with the
vehicle seat belt.
This child restraint MUST ALWAYS face the rear of the vehicle
until the child is at least 1 year old and weighs 22 lb (10 kg).
Do not use the magnetic chest clip
with children who have an implanted
electronic medical device.
A magnet is used to help secure the
chest clip locking mechanism together
which may interfere with the proper
function of an implanted electronic
medical device.
Parents or caregivers who have an implanted electronic
device should keep their device away from the chest clip
and consult their doctor and medical device manufacturer
for specific information before using this chest clip.
If a parent/caregiver or child has an implanted electronic
medical device, please contact Dorel (see back cover) for a
replacement (non-magnetic) chest clip free of charge.
WARNING:
IMPLANTED
ELECTRONIC
MEDICAL
DEVICES
continued on next page
8

9
1
2
1
2
1
2
1
2
1
2
4
Rear-Facing
Child Fit
1
2
Fully Loosen
Harness Straps
Push down on the harness
release lever (through the
opening in the pad) while pulling
out on the harness straps as
shown.
Undo Chest Clip
Press in on the release button
and pull apart.
Place Child in Car Seat
Your child’s bottom and back
should be flat against the car seat.
1
2
Undo Buckle
It may be easier to undo the
buckle by pressing in towards
the top of the button.
OR Press in on the top & bottom
buttons and pull apart.
3

10
1
2
1
2
6
7
1
2
5
Check Buckle Position
• Use the slot closest to your
child.
• The buckle should not be
underneath or behind your
child.
DO NOT use the 3rd buckle
slot in Rear-Facing Mode.
Check Harness
Strap Position
The harness strap MUST
be at or slightly below the
shoulders; never above.
Check Head
Position
The top of your child’s head
MUST be at least 1 in. (2.5
cm) below the top of the car
seat’s headrest.
To change the harness strap height, see page 51.
To change the buckle position, see page 53.
To secure child in car seat & check harness tightness, see
pages 29-31.
If you cannot achieve a snug harness fit for your child, see
pages 53-57.
x

11 Rear-Facing
Vehicle Install
There are 2 different methods for install.
Use only one:
Vehicle Belt
DO NOT use both the LATCH: lower anchor belt and
vehicle belt at the same time to install the car seat.
LATCH: Lower
Anchor Belt
OR
WARNING:
Before installing the car seat in your vehicle, check to see if you
need to adjust the buckle position for your child. See page 9 for
child fit.
Once the car seat is installed, you will not be able to adjust the
buckle position.
Review Vehicle Owner’s Manual
Determine what kind of vehicle belts your car has and how to use
them to lock a car seat in place OR where LATCH: lower anchor
seating positions are located in your vehicle.

continued on next page
12
2
1Place Car Seat
Rear-Facing in
Back Seat
The car seat base MUST
be flat on the vehicle
seat.
Recline Car Seat &
Check Rear-Facing
Level Line
For children who cannot sit up
unassisted, the Rear-Facing Level Line
on the car seat MUST be parallel with the
ground using Positions 2-5.
For children who can sit up unassisted,
you may make the car seat more upright
starting from the fully reclined Position 5
& adjusting to more upright Positions 4-2.
DO NOT use position 1 for Rear-Facing mode.
See Reclining Car Seat, page 58.

13
3Locate Rear-Facing
Belt Path & Route
Vehicle Belt or
Lower Anchor Belt
Through It
For the LATCH belt: You may
need to fully lengthen the belt
before routing it into the belt
path.
Squeeze the adjuster button
and pull the belt out as shown.
OR
For Lower Anchor Belt
Installation
Pull front of seat pad down as shown.
Gather complete lower anchor belt, with
lanyard, to side of harness strap so they
do not cross over each other.
Route belt under seat pad.
Pull front of seat pad up as shown &
route lower anchor belt hook under pad.
Through opening in front of seat pad,
route lower anchor belt hook through
Rear-Facing Belt Path as shown.
The lower anchor strap goes in front
of the buckle as shown in step 4 on
page 14.

Buckle Vehicle Belt
If your car has a switchable
retractor, use it to lock the
vehicle belt. Review page
67 of this manual or your
vehicle owner’s manual.
OR Attach Lower
Anchor Belt Hooks
to Vehicle’s Lower
Anchors
continued on next page
5
Vehicle Belt or Lower
Anchor Belt Goes:
• under the car seat pad; AND
• across the car seat; AND
• in front of the buckle; AND
• out the other Rear-Facing
Belt Path opening.
DO NOT twist the belt.
4
14
Finished Lower
Anchor Belt Routing
The lower anchor belt adjuster can be
on either side of the car seat.
Adjuster