Cybex Solution B4 i-Fix Car Seat
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The Cybex Solution B4 i-Fix car seat combines advanced i-Size safety, comfort, and functionality for children aged approximately 3 to 12 years (100–150 cm). Designed for everyday convenience and long-lasting use, it offers ISOFIX installation, 12-position headrest adjustment, and the trusted L.S.P. Plus side-impact protection system. Developed to the latest UN R129/03 safety standard, it ensures your child travels safely and comfortably at every stage.
Engineered for modern families, the Solution B4 i-Fix provides reliable protection and user-friendly features for years of safe travel. Its ISOFIX system allows for quick and secure installation, keeping the seat stable and properly anchored to your vehicle. The Linear Side-impact Protection (L.S.P. System Plus) works to reduce the force of side collisions, offering enhanced safety for your child’s head and upper body.
The 12-position adjustable headrest grows effortlessly with your child, providing a precise, comfortable fit throughout their development. Designed with soft-touch, skin-friendly fabrics and lightweight construction (4.5 kg), the Solution B4 i-Fix is easy to handle, carry, and switch between cars. The integrated cup holder adds everyday practicality, keeping drinks within easy reach for your little one.
With its slim yet sturdy profile, the seat adapts perfectly to any car thanks to its adjustable backrest, ensuring a snug and safe fit every time.
What’s Included:
- Cybex Solution B4 i-Fix Car Seat
- Cup Holder
- User Guide
Product Highlights:
- Suitable for children from approximately 3 to 12 years (100–150 cm)
- Approved to UN R129/03 i-Size safety standard
- ISOFIX installation for quick, secure setup
- L.S.P. Plus System for advanced side-impact protection
- 12-position adjustable headrest grows with your child
- Adjustable backrest ensures a perfect fit to your vehicle seat
- Lightweight design (4.5 kg) for easy transfer between cars
- Cup holder included for convenience on the go
- Premium fabrics gentle on your child’s skin
- Comfort-engineered seat for long journeys
Features & Benefits:
- Enhanced i-Size Safety: Built to the latest UN R129/03 standard for proven protection and peace of mind.
- Simple ISOFIX Installation: Hassle-free click-in system ensures stability and correct fit every time.
- Advanced L.S.P. Plus Technology: Reduces the force of side impacts for maximum head and torso protection.
- Adapts as They Grow: 12 adjustable headrest positions offer a custom fit through every growth stage.
- Adjustable Backrest: Fits securely against your vehicle seat for improved comfort and safety.
- Lightweight & Portable: Weighing only 4.5 kg, perfect for switching between family cars.
- Practical Cup Holder: Keeps drinks within easy reach to reduce spills on journeys.
- Gentle, Skin-Safe Materials: All fabrics tested to the highest safety standards.
- Machine-Washable Covers: Easy to clean and maintain for busy parents.
- Sleek, Space-Efficient Design: Ideal for cars of all sizes without compromising safety.
Specifications / Size & Fit:
- Length: 390 mm
- Width: 570 mm
- Height: 640 mm
- Weight: 4.5 kg
- Child Height Range: 100–150 cm
- Child Weight Range: Approx. 15–50 kg
- Approval Standard: UN R129/03 (i-Size)
- Installation: ISOFIX
- Care Instructions: Machine washable covers at 30°C
Compatibility:
- Compatible with Cybex Solution B i-Line Summer Cover
- Compatible with Cybex ISOFIX Guides
Ideal Uses:
Perfect for families seeking a reliable, lightweight, and long-lasting high-back booster that combines comfort, practicality, and i-Size safety. Ideal for daily commutes, long-distance journeys, and multi-car use.








