Smart, Safe Rear-Facing Travel

Designed for secure rear-facing travel from approximately 3 months up to 4.5 years (61–105 cm, up to 20 kg)—or from birth when using the newborn inlay accessory—the CYBEX Sirona S combines innovative safety engineering with everyday convenience. Featuring smooth 360° rotation and advanced side-impact protection, it makes daily family travel simpler and safer.

Key Features

• Up to 50% Higher Safety in Rear-Facing Position: Traveling rear-facing up to 4.5 years significantly reduces the risk of injury during a frontal collision by distributing impact forces across the protective shell.
• 360° One-Handed Rotation: Effortlessly swivel the car seat toward the vehicle door to load and unload your child with ease, eliminating awkward lifting and back strain.
• 25% More Side-Impact Protection: The integrated Linear Side-Impact Protection (L.S.P.) system easily folds out during setup to redirect impact energy away from your child and into the energy-absorbing shell.
• GrowTech Adaptability: Adjusts effortlessly as your child grows, featuring a multi-position headrest and optimized recline angles for both rear-facing and upright positions.
• Magnetic Belt Holders: Clever integrated magnets keep the harness straps out of the way, ensuring a smooth, hassle-free onboarding experience.
• Detachable XXL Sun Canopy: Features a UPF50+ sun rating and a breathable mesh window to keep your child cool and protected during naps on the go.
• Secure Base S Compatibility: Mounts securely onto the CYBEX Base S using ISOFIX connectors and a height-adjustable load leg for enhanced stability.