Britax Willow SC
The Britax Willow SC rear-faces up to 30 lb, is 16.9 in wide, and weighs 9.3 lb, per Britax. A step-up Britax infant carrier with ClickTight installation and an Alpine base with a stability bar.
- $329.99List price
- 30 lbRear-facing to
- 9.3 lbSeat weight
- 16.9 inWidth
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Willow SC: key facts
- The Britax Willow SC rear-faces from 4 to 30 lb and up to 32 in tall, per Britax.
- Outgrown by height: "when the top of child's head is at least 1 in (2.5 cm) below the top edge of head restraint"
- It installs with ClickTight or LATCH.
- Britax says it expires 6 years after the date of manufacture.
- Britax lists it as certified for aircraft ("When installing baseless: This restraint is certified for use in motor vehicles and aircraft. When installing with the base: This restraint is not certified for aircraft use, because the aircraft belt is not compatible with this child restraint base.").
- It's 16.9 in wide at the widest point and weighs 9.3 lb without the base.
From Britax's manual and published specs. Always follow the limits on your seat's labels.
How the Willow SC stacks up
Against the 74 infant car seats we track. The shaded band is where the middle half of them fall; the dot is this one.
Within the typical range for infant car seats (6 years to 8 years).
The same as most infant car seats (30 lb).
Within the typical range for infant car seats (16.9 in to 17.5 in).
Within the typical range for infant car seats (8.2 lb to 9.8 lb).
Within the typical range for infant car seats ($219.99 to $449.99).
What sets the Willow SC apart
Measured against the 74 infant car seats we compare, from each maker's published specs.
- 7th narrowestof the 41 infant car seats with it published: 16.9 in
- Weight: 9.3 lbin the middle half of the 58 infant car seats that publish it (8.2 lb to 9.8 lb)
Next to its closest matches
- Maxi-Cosi Mico Pro+Next to it, the Willow SC is 2 years shorter before it expires; no load leg (the Mico Pro+ has it); has anti-rebound bar (the Mico Pro+ doesn't).
- Chicco KeyFit Max Zip ClearLuxNext to it, the Willow SC is 0.1 in narrower; 0.7 lb lighter; $20 less.
- Peg Perego Primo Viaggio Urban MobilityNext to it, the Willow SC is 1 years shorter before it expires; 0.1 in narrower; 1.5 lb lighter; has base included (the Primo Viaggio Urban Mobility doesn't); no load leg (the Primo Viaggio Urban Mobility has it).
Strollers named with the Willow SC
1 stroller on Cribpicks is named with the Willow SC in a maker's fit list. Listed stroller fit: Select Britax strollers.
| Stroller | How it is listed |
|---|---|
| BOB Alterrain Pro | With the Single Jogging Stroller Adapter for Select Britax Infant Car Seats with ClickTight |
Matched by brand and model name. Fit can depend on the model year, so check yours with both makers.
Flying with the Willow SC
Britax's label: “When installing baseless: This restraint is certified for use in motor vehicles and aircraft. When installing with the base: This restraint is not certified for aircraft use, because the aircraft belt is not compatible with this child restraint base.” 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
- ClickTight belt install
- Anti-rebound stability bar on base
- Fabric without added flame retardants
Worth checking
- 30 lb limit
Where to buy the Willow SC
Prices and availability change. We may earn a commission from some links.
- 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 Willow SC | |
|---|---|
| Type | Infant car seat |
| List price | $329.99 |
| Rear-facing weight | 4–30 lb |
| Rear-facing height | Up to 32 in |
| Seat weight | 9.3 lb |
| Base weight | 10.2 lb |
| Width | 16.9 in |
| Head rule | when the top of child's head is at least 1 in (2.5 cm) below the top edge of head restraint |
| Base included | Yes |
| Newborn insert | Infant positioning pillow (optional): can be used with infants weighing less than 11 lbs (5 kg); harness inner loop/slot maximum 11 lbs (5 kg). |
| Installation | ClickTight, LATCH |
| Load leg | No |
| Anti-rebound bar | Yes |
| Rotates | No |
| Harness heights | 4 |
| Works with strollers | Select Britax strollers |
| Handle in the car | The carry handle must be adjusted to any locked position for use in a vehicle. |
| Aircraft label | Certified for aircraft, per the maker |
| No added flame retardants | Yes |
| Expires after | 6 years |
Compare the Willow SC with
How each closest rival differs from the Willow SC, from the makers' specs.
- Maxi-CosiMico Pro+rear-facing to 30 lb$319$319.99
- 2 years longer before it expires
- $10 less
- ChiccoKeyFit Max Zip ClearLuxrear-facing to 30 lb17 in wide$349.99
- 0.1 in wider
- 0.7 lb heavier
- $20 more
- Peg PeregoPrimo Viaggio Urban Mobilityrear-facing to 30 lb17 in wide$349.99
- 1 years longer before it expires
- 0.1 in wider
- 1.5 lb heavier
- UPPAbabyMesa V3rear-facing to 30 lb17 in wide$349.99
- 4 years longer before it expires
- 0.1 in wider
- 0.6 lb heavier
Willow SC: questions answered
From Britax's published specs, last checked 2026-11-06.
Does the Britax Willow SC rear-face longer than other infant seats?
24 of the 97 infant seats we track rear-face to a higher weight than its 30 lb. The highest is the Baby Jogger City GO 2 at 35 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 Willow SC fit three across or in a small car?
It's narrower than 66% of the infant seats we track, at 16.9 in. The narrowest is the Evenflo NurtureMax at 14.8 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.
Is the Britax Willow SC heavy to carry?
With a 7.5 lb newborn inside you'd lift about 16.8 lb, and that grows as your baby does. The carrier is lighter than 40% of the infant seats we track. See the lightest infant seats.
Can you use the Britax Willow SC in a taxi or Uber without the base?
Britax doesn't list a baseless install, so plan on bringing the base. See infant seats that install without a base.
Can you bring the Britax Willow SC on a plane?
Yes, Britax 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 9.3 lb to carry through the airport.
Willow SC or Mico Pro+: what's different?
By the makers' specs, the Willow SC has an anti-rebound bar; the Mico Pro+ has a load leg; the Mico Pro+ lists for $10 less. See every spec side by side.
Is it OK to buy a used Willow SC?
NHTSA publishes guidance on used car seats on its car seat page. Britax lists a lifespan of 6 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 infant car seats
- Peg PeregoPrimo Viaggiorear-facing to 30 lb8.2 lb$349.99
- JoieMint Latchrear-facing to 30 lb9.3 lb$299.99
- ChiccoKeyFit Max Zip ClearTexrear-facing to 30 lb17 in wide$299.99
- GracoGoMaxrear-facing to 30 lb10.9 lb$299.99
- Safety 1stOnBoard Slide DLXrear-facing to 30 lb$289$289.99
- EvenfloRevolve180 LiteMax NXTrear-facing to 30 lb17.8 in wide$289.99
Where these specs come from
- us.britax.com/shop/car-seats/willow-sc-clicktight-infant-car-seat
- us.britax.com/support/faq/infant-car-seats
- us.britax.com/shop/car-seats/rear-facing-only
- cdne1britaxus.azureedge.net/bri/uploads/user-guides-videos-and…
Last checked 2026-11-06. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.