Solution B3 i-Fix
- Age 3 yrs - approx. 12 yrs
- Weight 15 kg - 50 kg
- 100 - 150 cm
522003891 (Grey)
Product Details
Specifications:
- Age range: From approx. 3 up to 12 years
- Child height: 100 -150 cm
- Child weight: From approx. 15 to 50 kg
- i-Size Norm: UN R129/04
Extended safety and excellent functionality
Safety, ease of use and comfort: the Solution B3 i-Fix high-back booster car seat has everything covered. Safety, with Linear Side-impact Protection Plus and strict testing under the latest UN R129/04 standard. Ease of use, with a practical ISOFIX system for simple and secure installation into your vehicle. Comfort, with a 12-position adjustable headrest means a snug fit for growing children. The Solution B3 i-Fix gives you the peace of mind you need to drive with your loved one.
Care instructions:
- Fabric covers machine washable at 30°C
Product Compatibility
- Summer Cover
- ISOFIX Guides
¹Compared to a seat without L.S.P. System.



Videos
Measurements
- Length
- 390 mm
- Width
- 570 mm
- Height
- 640 mm
- Weight
- 4.5 kg

What is included?
- Solution B3 i-Fix car seat
- User guide (Quick-start gude & digital guide access)
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Will this car seat fit in my vehicle?
Can I use this car seat on a flight?
Is it normal that the car seat’s backrest moves, and there is space between vehicle seat and car seat?
Is it ok to keep using a car seat after an accident?
My car seat is faulty, how can I get it repaired?
How do I correctly secure my child in the seat?
How can I clean my car seat?
Is it possible to use a car seat with an ISOFIX System in a vehicle without ISOFIX anchorage points?
Is it okay to install this car seat on the passenger seat?
Where can I get replacement parts for my product?
How do I install the cup holder?
How should the headrest be adjusted?
Can I use the car seat on laterally-facing vehicle seats?
Can I use the car seat on rear-facing vehicle benches (e.g. in vans or minibuses)?
The ISOFIX System is impossible or very difficult to release from the ISOFIX anchorage points in the vehicle. What can I do?
Where should I install a car seat in my car?
What should I bear in mind when installing the car seat in my vehicle?
Can I use the car seat even when the side airbag is activated?
Are both side-impact protectors (L.S.P.s) needed?
Do high-back booster seats perform better than booster seats?
What's the difference between UN R44 and UN R129?
When does a car seat expire?
What kind of clothing should my child wear when seated in the car seat?
Warranty Claims
If you need to claim your warranty, please contact the original retailer where you purchased your CYBEX product.
If you purchased your product directly from the CYBEX Online Shop, please use our Contact Form to get in touch with us.
Spare Parts (outside Warranty)
If you are looking for spare parts and your product is no longer under warranty, please contact any authorized CYBEX retailer in your area. You can find one using our Store Locator.
Not sure if you're still under warranty? In that case, feel free to contact us – we're happy to help.
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