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Britax Galaxy360 Slim

The Britax Galaxy360 Slim rear-faces up to 50 lb, forward-faces up to 65 lb, and is 17 in wide, per Britax. A slim rotating convertible from Britax with a 360-degree swivel ring, ClickTight seat belt install and a built-in rebound panel.

  • $429.99List price
  • 50 lbRear-facing to
  • 65 lbHarness to
  • 17 inWidth
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When does it expire?

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All convertible car seats

Galaxy360 Slim: key facts

  • The Britax Galaxy360 Slim rear-faces from 5 to 50 lb and 18 to 49 in tall; forward-faces with a harness from 30 to 65 lb and 35 to 49 in tall, per Britax.
  • Outgrown by height: "Rear-facing: when the top of child's head is at least 1 in (2.5 cm) below the top edge of head restraint. Forward-facing: when the top of the ears are below top of head restraint."
  • It installs with seat belt (ClickTight).
  • Britax says it expires 10 years after the date of manufacture.
  • Britax says it isn't certified for aircraft.
  • It's 17 in wide at the widest point.

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

How the Galaxy360 Slim stacks up

Against the 39 convertible car seats we track. The shaded band is where the middle half of them fall; the dot is this one.

Expiration10 years

Within the typical range for convertible car seats (9 years to 10 years).

This one
7 yearsmiddle 10 years10 years
Rear-facing limit50 lb2nd highest rear-facing limit of 38

Within the typical range for convertible car seats (40 lb to 50 lb).

This one
35 lbmiddle 40 lb65 lb
Forward-facing limit65 lbHighest forward-facing limit of 38 convertible car seats

The same as most convertible car seats (65 lb).

This one
40 lbmiddle 65 lb65 lb
Width17 in5th narrowest of 28

Within the typical range for convertible car seats (17 in to 18.9 in).

This one
14.5 inmiddle 17.8 in23.5 in
Price$429.9921st lowest price of 37

Within the typical range for convertible car seats ($129.99 to $499.99).

This one
$59.99middle $399.99$990

What sets the Galaxy360 Slim apart

Measured against the 39 convertible car seats we compare, from each maker's published specs.

  • Rotates11 of the 38 convertible car seats with this listed have it
  • No aircraft labelunlike most: 31 of 35 convertible car seats have it
  • 5th narrowestof the 28 convertible car seats with it published: 17 in

Next to its closest matches

  • Evenflo Gold Revolve360 SlimNext to it, the Galaxy360 Slim is 0.1 in wider; has anti-rebound bar (the Gold Revolve360 Slim doesn't); no aircraft label (the Gold Revolve360 Slim has it).
  • Britax Poplar SNext to it, the Galaxy360 Slim is $30 more; has rotates (the Poplar S doesn't); no aircraft label (the Poplar S has it).
  • Nuna RAVANext to it, the Galaxy360 Slim is 2 in narrower; $50 less; has anti-rebound bar (the RAVA doesn't); has rotates (the RAVA doesn't).

Listed features

  • 360-degree rotation eases buckling
  • Slim 17-inch width
  • Built-in rebound-reduction panel

Where to buy the Galaxy360 Slim

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

good to know
  • New for 2026. Some specs may not be published yet.
  • 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

Britax Galaxy360 Slim
TypeConvertible
List price$429.99
Rear-facing weight5–50 lb
Rear-facing height18–49 in
Forward-facing weight30–65 lb
Forward-facing height35–49 in
Width17 in
Head ruleRear-facing: when the top of child's head is at least 1 in (2.5 cm) below the top edge of head restraint. Forward-facing: when the top of the ears are below top of head restraint.
Newborn insertHead, middle and lower infant inserts (optional). Lower infant insert MUST be used with children weighing 5-22 lbs rear-facing; head and middle inserts MAY be used with children weighing 5-11 lbs rear-facing; no inserts forward-facing.
Installationseat belt (ClickTight)
Load legNo
Anti-rebound barYes
RotatesYes
Harness heights11
Recline positions6
Aircraft labelNot certified for aircraft
No added flame retardantsYes
Expires after10 years

Compare the Galaxy360 Slim with

How each closest rival differs from the Galaxy360 Slim, from the makers' specs.

Ask the meadow

Galaxy360 Slim: questions answered

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

Does the Britax Galaxy360 Slim rear-face longer than other convertible seats?

1 of the 50 convertible seats we track rear-face to a higher weight than its 50 lb. The highest is the Axkid One 3 at 65 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 Britax Galaxy360 Slim fit three across or in a small car?

It's narrower than 68% of the convertible seats we track, at 17 in. The narrowest is the WAYB Pico at 14.5 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 Britax Galaxy360 Slim on a plane?

Britax doesn't list it as certified for aircraft, so it can be checked as luggage but not used in the plane seat. See seats approved for planes.

Galaxy360 Slim or Gold Revolve360 Slim: what's different?

By the makers' specs, the Galaxy360 Slim has an anti-rebound bar; the Galaxy360 Slim has no added flame retardants (maker's claim); the Galaxy360 Slim lists for $20 less. See every spec side by side.

Is it OK to buy a used Galaxy360 Slim?

NHTSA publishes guidance on used car seats on its car seat page. Britax lists a lifespan of 10 years from manufacture for this model. 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 convertible car seats

  • ClekFllorear-facing to 50 lbforward-facing to 65 lb$499.99
  • BritaxPoplarrear-facing to 50 lbforward-facing to 65 lb$349.99
  • ChiccoFit360 ClearTexrear-facing to 40 lbforward-facing to 65 lb$439.99
  • NunaRAVA nextrear-facing to 50 lbforward-facing to 65 lb$525
  • ChiccoFit360 SE ClearTexrear-facing to 40 lbforward-facing to 65 lb$399.99
  • Peg PeregoPrimo Viaggio Convertiblerear-facing to 45 lbforward-facing to 65 lb$349.99

Where these specs come from

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