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Evenflo All4Stages Slim Plus Canopy 4-in-1

The Evenflo All4Stages Slim Plus Canopy 4-in-1 rear-faces up to 40 lb, forward-faces up to 65 lb, and is 16.9 in wide, per Evenflo. Evenflo slim all-in-one seat with rear-facing, forward-facing harness, high-back booster and no-back booster modes. Evenflo lists SKU CS400122526 (Bodie Gray), a 12-position headrest and SecureTight installation.

  • $259.99List price
  • 40 lbRear-facing to
  • 65 lbHarness to
  • 120 lbBooster to
See it on Evenflo's site

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All all-in-one car seats

All4Stages Slim Plus Canopy 4-in-1: key facts

  • The Evenflo All4Stages Slim Plus Canopy 4-in-1 rear-faces from 4 to 40 lb and 17 to 43 in tall; forward-faces with a harness from 30 to 65 lb and 35 to 49 in tall; works as a booster from 40 to 120 lb and 44 to 60 in tall, per Evenflo.
  • Outgrown by height: "Rear-facing: Top of child's head is at least 2.5 cm (1 in.) or more below the top of the child restraint headrest. Forward-facing: Tops of the child's ears are at or below the top of the child restraint headrest."
  • It installs with SecureTight.
  • Evenflo lists it as certified for aircraft ("When used with the internal harness ... this restraint is certified for use only in passenger and multi-purpose passenger motor vehicles, buses and trucks equipped with either lap belts only or lap/shoulder belt systems and in aircraft. ... In booster mode, this restraint is NOT certified for aircraft use.").
  • It's 16.9 in wide at the widest point and weighs 25.2 lb.

From Evenflo's manual and published specs. Always follow the limits on your seat's labels.

How the All4Stages Slim Plus Canopy 4-in-1 stacks up

Against the 57 all-in-one car seats we track. The shaded band is where the middle half of them fall; the dot is this one.

Rear-facing limit40 lb11th highest rear-facing limit of 57

The same as most all-in-one car seats (40 lb).

This one
40 lbmiddle 40 lb50 lb
Width16.9 in3rd narrowest of 33

Below the typical range for all-in-one car seats (18.3 in to 19.5 in).

This one
16.7 inmiddle 19 in21.5 in
Weight25.2 lb18th lightest of 35

Within the typical range for all-in-one car seats (20 lb to 29.3 lb).

This one
12.2 lbmiddle 25.2 lb35 lb
Price$259.9920th lowest price of 54

Within the typical range for all-in-one car seats ($229.99 to $399.99).

This one
$99middle $319.99$799.95

What sets the All4Stages Slim Plus Canopy 4-in-1 apart

Measured against the 57 all-in-one car seats we compare, from each maker's published specs.

  • 3rd narrowestof the 33 all-in-one car seats with it published: 16.9 in
  • Weight: 25.2 lbin the middle half of the 35 all-in-one car seats that publish it (20 lb to 29.3 lb)

Next to its closest matches

  • Joie saffron SI 4-in-1Next to it, the All4Stages Slim Plus Canopy 4-in-1 is 2.1 in narrower; 2.1 lb heavier; has aircraft label (the saffron SI 4-in-1 doesn't).
  • Maxi-Cosi Pria All-in-OneNext to it, the All4Stages Slim Plus Canopy 4-in-1 is 13 lb heavier.

Flying with the All4Stages Slim Plus Canopy 4-in-1

Evenflo's label: “When used with the internal harness ... this restraint is certified for use only in passenger and multi-purpose passenger motor vehicles, buses and trucks equipped with either lap belts only or lap/shoulder belt systems and in aircraft. ... In booster mode, this restraint is NOT certified for aircraft use.” It is 16.9 in wide at its widest point.

What airlines say about car seats:

  • American: “Each ticketed customer is allowed 1 stroller and 1 car seat to be checked free of charge” “If an unoccupied, adjoining seat is not available, the gate agent will check the safety seat to your final destination.” Source
  • Alaska: “We will transport your child's car seat and stroller free of charge as checked baggage.” Source
  • JetBlue: “Checking a child safety seat will not count towards your checked baggage allowance and there is no fee assessed” Source
  • Spirit: “One (1) car seat will be accepted per child as checked baggage at no charge.” Source
  • Frontier: “strollers and car seats can be checked for free.” Source
  • Allegiant: “There is no charge for checking or gate checking one car seat per fare-paying passenger.” Source
  • Breeze: “Child seats may be carried on board the aircraft if a seat has been purchased for the Infant or Child” Source

Quoted from each airline's page as of 2026-11-02.

Listed features

  • Four modes in one seat
  • Assembled width of 16.9 in per Evenflo
  • Evenflo lists GREENGUARD Gold Certified
  • Evenflo says SecureTight achieves secure installation with up to 50% less effort

Worth checking

  • Evenflo page links only a Spanish manual
  • Evenflo lists a 90-day limited warranty

Where to buy the All4Stages Slim Plus Canopy 4-in-1

Prices and availability change. We may earn a commission from some links.

good to know
  • Check for recalls: Search the agency's recall list with the model number and date code from the label: NHTSA recall search.
  • Car seat use and installation: see NHTSA's car seat page, which also lists free car seat inspection by certified technicians. Check the label and the maker's instructions, and ask your pediatrician about your child.

Full specs

Evenflo All4Stages Slim Plus Canopy 4-in-1
TypeAll-in-one
List price$259.99
Rear-facing weight4–40 lb
Rear-facing height17–43 in
Forward-facing weight30–65 lb
Forward-facing height35–49 in
Booster weight40–120 lb
Booster height44–60 in
Seat weight25.2 lb
Width16.9 in
Head ruleRear-facing: Top of child's head is at least 2.5 cm (1 in.) or more below the top of the child restraint headrest. Forward-facing: Tops of the child's ears are at or below the top of the child restraint headrest.
Newborn insertOptional head pillow and body pillow (rear-facing); no weight limit stated
InstallationSecureTight
Load legNo
Anti-rebound barNo
RotatesNo
Aircraft labelCertified for aircraft, per the maker

Compare the All4Stages Slim Plus Canopy 4-in-1 with

How each closest rival differs from the All4Stages Slim Plus Canopy 4-in-1, from the makers' specs.

Ask the meadow

All4Stages Slim Plus Canopy 4-in-1: questions answered

From Evenflo's published specs, last checked 2026-11-06.

Does the Evenflo All4Stages Slim Plus Canopy 4-in-1 rear-face longer than other all-in-one seats?

15 of the 70 all-in-one seats we track rear-face to a higher weight than its 40 lb. The highest is the Britax One4Life ClickTight All-in-One at 50 lb. NHTSA: stay rear-facing "until he or she reaches the top height or weight limit allowed by your car seat's manufacturer." (NHTSA)

Will the Evenflo All4Stages Slim Plus Canopy 4-in-1 fit three across or in a small car?

It's narrower than 94% of the all-in-one seats we track, at 16.9 in. The narrowest is the Chicco Fit3x ClearTex Ultra-Slim All-in-One at 16.7 in. Fit depends on your vehicle; check each seat's manual and your vehicle manual. Car seat use and installation: see NHTSA's car seat page, which also lists free car seat inspection by certified technicians. Check the label and the maker's instructions, and ask your pediatrician about your child.

Can you bring the Evenflo All4Stages Slim Plus Canopy 4-in-1 on a plane?

Yes, Evenflo lists it as certified for aircraft; look for the red-lettered label that says so. The FAA asks that a car seat go in a window seat so it doesn't block the aisle, and the crew will look for that label. It weighs 25.2 lb to carry through the airport.

Is it OK to buy a used All4Stages Slim Plus Canopy 4-in-1?

NHTSA publishes guidance on used car seats on its car seat page. Check the label and the maker's instructions, and ask your pediatrician about your child.

Still wondering? Write to us at hello@cribpicks.com and we'll look it up.

More all-in-one car seats

Where these specs come from

Last checked 2026-11-06. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.