Britax car seats

16 Britax models listed in the US: 5 infant seats, 3 convertible seats, 2 all-in-one seats, 2 harness-to-booster seats, 2 2-in-1 boosters, 2 backless boosters. Limits and specifications were checked against Britax’s US site and manuals on September 17, 2026. Britax US site (opens in a new tab)

Britax car seat comparison table

Britax car seats compared: limits by mode, width, seat weight and usable life
Car seat	Fits child (lb)	Rear-facingRear	Forward-facingForward	BoosterBooster	WidthWidth	Seat weightWeight	Usable lifeLife	Aircraft	Price
One4Life ClickTightAll-in-one	5–120 lb	50 lb	65 lb	120 lb	19.5 in	30 lb	10 yr	Certified	$439.99 for the Britax One4Life ClickTight All-in-One Car Seat on Amazon
One4Life SlimAll-in-one	5–120 lb	50 lb	65 lb	120 lb	Not published	28 lb	10 yr	Certified	$429.99 for the Britax One4Life Slim All-in-One Car Seat on Amazon
Grow With You ClickTightHarness-to-booster	30–120 lb	Not published	65 lb	120 lb	Not published	25 lb	9 yr	Certified	$359.99 for the Britax Grow With You ClickTight Harness-2-Booster Car Seat on Amazon
Grow With YouHarness-to-booster	30–120 lb	Not published	65 lb	120 lb	Not published	23 lb	9 yr	Certified	$239.99 for the Britax Grow With You Harness-2-Booster Car Seat on Amazon
Highpoint 2-Stage2-in-1 booster	40–120 lb	Not published	Not published	120 lb	Not published	12 lb	10 yr	No	$219.99 for the Britax Highpoint 2-Stage Belt-Positioning Booster on Amazon
Skyline 2-Stage2-in-1 booster	40–120 lb	Not published	Not published	120 lb	Not published	11 lb	10 yr	No	$137.30 for the Britax Skyline 2-Stage Belt-Positioning Booster on Amazon
UpNGo Backless Booster SeatBackless booster	40–120 lb	Not published	Not published	120 lb	17.1 in	3.1 lb (lightest in this table)	10 yr	No	$59.99 for the Britax UpNGo Backless Booster Seat on Amazon
UpNGo Click Backless Booster SeatBackless booster	40–120 lb	Not published	Not published	120 lb	17.1 in	4.5 lb	10 yr	No	$69.99 for the Britax UpNGo Click Backless Booster Seat on Amazon
Galaxy360 SlimRotating convertible	5–65 lb	50 lb	65 lb	Not published	17 in	Not published	10 yr	No	$429.99 for the Britax Galaxy360 Slim Rotating Convertible Car Seat on Amazon
PoplarConvertible	5–65 lb	50 lb	65 lb	Not published	17 in	27.2 lb	10 yr	Certified	$329.99 for the Britax Poplar Convertible Car Seat on Amazon
Poplar SConvertible	5–65 lb	50 lb	65 lb	Not published	17 in	28 lb	10 yr	Certified	$399.99 for the Britax Poplar S Convertible Car Seat on Amazon
Cypress Infant Car Seat with Alpine BaseInfant	4–30 lb	30 lb	Not published	Not published	16.9 in	9.7 lb	6 yr	Certified	$249.99 for the Britax Cypress Infant Car Seat with Alpine Base on Amazon
Willow S Infant Car Seat with Alpine BaseInfant	4–30 lb	30 lb	Not published	Not published	16.9 in	Not published	6 yr	Certified	$279.99 for the Britax Willow S Infant Car Seat with Alpine Base on Amazon
Willow SC Infant Car Seat with Alpine BaseInfant	4–30 lb	30 lb	Not published	Not published	16.9 in	9.3 lb	6 yr	Certified	$329.99 for the Britax Willow SC Infant Car Seat with Alpine Base on Amazon
Arbor Infant Car Seat with StayTight BaseInfant	4–30 lb	30 lb	Not published	Not published	Not published	9.9 lb	6 yr	Certified	No current price
Willow Infant Car Seat with Aspen BaseInfant	4–30 lb	30 lb	Not published	Not published	Not published	8.99 lb	6 yr	Certified	No current price

Limits and specifications are each manufacturer’s own, checked September 17, 2026. A dash means the maker does not publish that number. A highlighted number is simply the highest or lowest value in this table, not a recommendation. Prices are Amazon’s, or the manufacturer’s own where Amazon has no listing, as of the date each was read, and are subject to change; the seller’s price at checkout applies. Photos come from the same Amazon listing or, where Amazon has none, the manufacturer’s site.

All Britax models

Fit my childWeight (lb)Height (in)Age (years)

Shows models with at least one mode whose published limits include all of these numbers. A mode with no published minimum age is not excluded by age. Always check every limit in the manual.

16 of 16 models

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Infant

Arbor Infant Car Seat with StayTight Base

Manufacturer limits for Britax Arbor Infant Car Seat with StayTight Base
Mode	Weight	Height
Rear-facing infant	4–30 lb	17–32 in

Seat weight: 9.9 lb
Width: Not published
Usable life: 6 years
Aircraft: Certified

Anti-rebound
2 colors

Full details Manual Buy from Britax

Infant

Cypress Infant Car Seat with Alpine Base

Manufacturer limits for Britax Cypress Infant Car Seat with Alpine Base
Mode	Weight	Height
Rear-facing infant	4–30 lb	17–32 in

Seat weight: 9.7 lb
Width: 16.9 in
Usable life: 6 years
Aircraft: Certified

Anti-rebound
2 colors

34% off$249.99List price ~~$379.99~~Ponte Glacier · Amazon price as of 2026-11-02 17:36 UTC, subject to change

Full details Manual See the deal

Rotating convertible

Galaxy360 Slim Rotating Convertible Car Seat

Manufacturer limits for Britax Galaxy360 Slim Rotating Convertible Car Seat
Mode	Weight	Height
Rear-facing harness	5–50 lb	18–49 in
Forward-facing harness	30–65 lb	35–49 in

Seat weight: Not published
Width: 17 in
Usable life: 10 years
Aircraft: Not certified

Anti-rebound
3 colors

$429.99Pebble · Amazon price as of 2026-11-02 17:37 UTC, subject to change

Full details Manual Check the price

Harness-to-booster

Grow With You ClickTight Harness-2-Booster Car Seat

Manufacturer limits for Britax Grow With You ClickTight Harness-2-Booster Car Seat
Mode	Weight	Height
Forward-facing harnessfrom 2 years	30–65 lb	35–49 in
Belt-positioning booster	40–120 lb	44–63 in

Seat weight: 25 lb
Width: Not published
Usable life: 9 years
Aircraft: Certified

5 colors

$359.99Cool Flow Gray · Amazon price as of 2026-11-02 17:37 UTC, subject to change

Full details Manual Check the price

Harness-to-booster

Grow With You Harness-2-Booster Car Seat

Manufacturer limits for Britax Grow With You Harness-2-Booster Car Seat
Mode	Weight	Height
Forward-facing harnessfrom 2 years	30–65 lb	35–49 in
Belt-positioning booster	40–120 lb	44–63 in

Seat weight: 23 lb
Width: Not published
Usable life: 9 years
Aircraft: Certified

$239.99Mod Black · Amazon price as of 2026-11-02 17:37 UTC, subject to change

Full details Manual Check the price

2-in-1 booster

Highpoint 2-Stage Belt-Positioning Booster

Manufacturer limits for Britax Highpoint 2-Stage Belt-Positioning Booster
Mode	Weight	Height
High-back booster	40–120 lb	44–63 in
Backless booster	48–120 lb	46–63 in

Seat weight: 12 lb
Width: Not published
Usable life: 10 years
Aircraft: Not certified

4 colors

$219.99Black Ombre · Amazon price as of 2026-11-02 17:37 UTC, subject to change

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All-in-one

One4Life ClickTight All-in-One Car Seat

Manufacturer limits for Britax One4Life ClickTight All-in-One Car Seat
Mode	Weight	Height
Rear-facing harness	5–50 lb	18–49 in
Forward-facing harness	30–65 lb	35–49 in
Belt-positioning booster	40–120 lb	44–63 in

Seat weight: 30 lb
Width: 19.5 in
Usable life: 10 years
Aircraft: Certified

5 colors

$439.99Teak · Amazon price as of 2026-11-02 17:37 UTC, subject to change

Full details Manual Check the price

All-in-one

One4Life Slim All-in-One Car Seat

Manufacturer limits for Britax One4Life Slim All-in-One Car Seat
Mode	Weight	Height
Rear-facing harness	5–50 lb	18–49 in
Forward-facing harness	30–65 lb	35–49 in
Belt-positioning booster	40–120 lb	44–63 in

Seat weight: 28 lb
Width: Not published
Usable life: 10 years
Aircraft: Certified

4 colors

$429.99Parchment 2.0 · Amazon price as of 2026-11-02 17:37 UTC, subject to change

Full details Manual Check the price

Convertible

Poplar Convertible Car Seat

Manufacturer limits for Britax Poplar Convertible Car Seat
Mode	Weight	Height
Rear-facing harness	5–50 lb	18–49 in
Forward-facing harness	30–65 lb	35–49 in

Seat weight: 27.2 lb
Width: 17 in
Usable life: 10 years
Aircraft: Certified

2 colors

6% off$329.99List price ~~$349.99~~Glacier Graphite 2.0 · Amazon price as of 2026-11-02 17:37 UTC, subject to change

Full details Manual See the deal

Convertible

Poplar S Convertible Car Seat

Manufacturer limits for Britax Poplar S Convertible Car Seat
Mode	Weight	Height
Rear-facing harness	5–50 lb	18–49 in
Forward-facing harness	30–65 lb	35–49 in

Seat weight: 28 lb
Width: 17 in
Usable life: 10 years
Aircraft: Certified

Anti-rebound
7 colors

$399.99Stone Onyx 2.0 · Amazon price as of 2026-11-02 17:37 UTC, subject to change

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2-in-1 booster

Skyline 2-Stage Belt-Positioning Booster

Manufacturer limits for Britax Skyline 2-Stage Belt-Positioning Booster
Mode	Weight	Height
High-back booster	40–120 lb	44–63 in
Backless booster	48–120 lb	46–63 in

Seat weight: 11 lb
Width: Not published
Usable life: 10 years
Aircraft: Not certified

$137.30Dusk · Amazon price as of 2026-11-02 17:37 UTC, subject to change

Full details Manual Check the price

Backless booster

UpNGo Backless Booster Seat

Manufacturer limits for Britax UpNGo Backless Booster Seat
Mode	Weight	Height
Backless booster	40–120 lb	46–63 in

Seat weight: 3.1 lb
Width: 17.1 in
Usable life: 10 years
Aircraft: Not certified

$59.99Raven Black · Amazon price as of 2026-11-02 17:37 UTC, subject to change

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Backless booster

UpNGo Click Backless Booster Seat

Manufacturer limits for Britax UpNGo Click Backless Booster Seat
Mode	Weight	Height
Backless booster	40–120 lb	46–63 in

Seat weight: 4.5 lb
Width: 17.1 in
Usable life: 10 years
Aircraft: Not certified

2 colors

$69.99Parchment · Amazon price as of 2026-11-02 17:37 UTC, subject to change

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Infant

Willow Infant Car Seat with Aspen Base

Manufacturer limits for Britax Willow Infant Car Seat with Aspen Base
Mode	Weight	Height
Rear-facing infant	4–30 lb	17–32 in

Seat weight: 8.99 lb
Width: Not published
Usable life: 6 years
Aircraft: Certified

Anti-rebound
3 colors

Full details Manual Buy from Britax

Infant

Willow S Infant Car Seat with Alpine Base

Manufacturer limits for Britax Willow S Infant Car Seat with Alpine Base
Mode	Weight	Height
Rear-facing infant	4–30 lb	17–32 in

Seat weight: Not published
Width: 16.9 in
Usable life: 6 years
Aircraft: Certified

Anti-rebound
5 colors

$279.99Glacier Onyx · Amazon price as of 2026-11-02 17:37 UTC, subject to change

Full details Manual Check the price

Infant

Willow SC Infant Car Seat with Alpine Base

Manufacturer limits for Britax Willow SC Infant Car Seat with Alpine Base
Mode	Weight	Height
Rear-facing infant	4–30 lb	17–32 in

Seat weight: 9.3 lb
Width: 16.9 in
Usable life: 6 years
Aircraft: Certified

Anti-rebound
2 colors

$329.99Pindot Onyx · Amazon price as of 2026-11-02 17:37 UTC, subject to change

Full details Manual Check the price

Limits and specifications come from each manufacturer’s US website and instruction manual. They are not a fit or safety verdict, and I have not hands-on tested these seats. Follow your seat’s own labels and manual. Amazon links are affiliate links. See my sources and limits.