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Description
cybex sirona z i CYBEX Sirona T i-Size 360° Rotating Car SeatCYBEX Sirona T i Size 360 Rotating Toddler Car Seat Extended Rear Facing Convertible Car Seat Birth to 105cm (Approx. 4 Years) Experience the ultimate in safety and convenience with the CYBEX Sirona T i Size 360 Rotating Toddler Car Seat. This innovative convertible car seat combines extended rear facing protection with revolutionary 360 rotation, making every journey comfortable for your child and effortless for you from birth through to
CYBEX Sirona T i-Size 360° Rotating Toddler Car Seat
Extended Rear-Facing Convertible Car Seat - Birth to 105cm (Approx. 4 Years)
Experience the ultimate in safety and convenience with the CYBEX Sirona T i-Size 360° Rotating Toddler Car Seat. This innovative convertible car seat combines extended rear-facing protection with revolutionary 360° rotation, making every journey comfortable for your child and effortless for you from birth through to approximately 4 years.
What's Included with the Sirona T i-Size
Complete Car Seat Package:
- CYBEX Sirona T i-Size rotating car seat
- Newborn inlay for use from birth
- 12-position height-adjustable headrest
- Integrated Linear Side-impact Protection (L.S.P.)
- 5-position recline system
- 5-point safety harness with automatic adjustment
- Breathable comfort fabrics
- Machine-washable seat covers
- Detailed instruction manual
Please Note: The 360° rotating ISOFIX Base T is sold separately and is required for installation and rotation function. The Sirona T cannot be installed using a vehicle seat belt.
Key Features & Benefits
Full 360° Rotation
- Complete 360° rotation for effortless access (requires Base T - sold separately)
- Rotate to car door in rear-facing position for easy loading
- Switch to forward-facing and rotate for convenient access
- One-handed operation with smooth mechanism
- Click stops every 90° for secure positioning
- No back strain or awkward reaching
- Perfect for managing active toddlers in tight spaces
Extended Rear-Facing Safety
- Rear-facing from birth to 105cm (approximately 4 years)
- Up to 5 times safer than forward-facing for young children
- Protects developing neck and spine
- Reduces impact forces in frontal collisions
- Follows latest pediatric safety recommendations
- Extended protection during crucial development years
- Forward-facing option available from 76cm when appropriate
Birth to 4 Years in One Seat
- Suitable from birth with included newborn inlay
- Grows with your child to 105cm (approximately 4 years)
- No need to purchase multiple car seats
- Long-term investment in safety and convenience
- Seamless progression from infant to toddler
- Maximum value from single seat purchase
- Sustainable choice reducing waste
i-Size Safety Excellence
- Meets latest i-Size (R129) safety regulations
- Height-based sizing for accurate fit
- Enhanced side-impact protection standards
- Rigorous crash testing exceeds requirements
- ISOFIX installation with Base T ensures stability
- Engineered and tested in Germany
- ADAC tested and approved
Linear Side-Impact Protection (L.S.P.)
- Advanced energy-absorbing technology
- Reduces collision forces by up to 25%
- Adjustable side-impact protectors
- Protects head, neck, and upper body
- Extends automatically when installed on Base T
- Additional safety layer beyond standard requirements
- Premium protection in all seating positions
5-Position Recline System
- Five comfortable recline positions
- Suitable for sleeping and awake toddlers
- Easy one-hand recline adjustment
- Works in both rear and forward-facing modes
- Prevents head slump during naps
- Comfortable for long journeys
- Harness automatically adjusts with recline
12-Position Adjustable Headrest
- Grows with your child from birth to 4 years
- 12 height positions for perfect fit
- Integrated harness adjustment system
- One-handed operation for quick changes
- Ensures proper head protection at all stages
- No threading harness through slots
- Automatic harness height adjustment
Premium Comfort Features
- Breathable fabrics for temperature regulation
- Padded seat and harness for comfort
- Generous padding around head and body
- Soft-touch materials gentle on skin
- Available in Comfort and Plus fabric options
- Ergonomic design for proper posture
- All-season comfort for year-round use
Compatibility
Base Compatibility:
- ✅ CYBEX Base T - Required for installation (sold separately)
- ✅ CYBEX Base Z2 - Also compatible
- ❌ Cannot be installed with vehicle seat belt
- ❌ Not compatible with other bases
Part of T-Line Modular System:
- Use Base T with Cloud T i-Size (birth to 24 months)
- Continue using same Base T with Sirona T (birth to 4 years)
- Single base investment lasts from birth to 4 years
Vehicle Compatibility:
- ✅ All vehicles with i-Size seating positions
- ✅ Vehicles with ISOFIX anchor points and Base T
- ⚠️ Check vehicle compatibility list before purchase
Understanding Comfort vs Plus Fabrics
The CYBEX Sirona T i-Size is available in two fabric options:
Comfort Fabric
- Premium polyester fabric
- Soft, comfortable seating surface
- Excellent breathability
- Machine washable at 30°C
- Available in 2 colourways
- Excellent quality at accessible price point
Plus Fabric (Premium Option)
- Advanced 3D mesh fabric inserts
- Enhanced breathability for superior comfort
- Reduces humidity and prevents moisture buildup
- Ideal for warmer climates or summer babies
- Available in 5 premium colourways
- Typically £30-40 more than Comfort version
- Machine washable at 30°C
Safety & Guidelines
Safe Use Recommendations:
- Suitable from birth (45cm) to 105cm (approximately 4 years)
- Maximum height: 105cm
- Requires Base T or Base Z2 for installation
- Rear-facing recommended until at least 15 months (legal minimum)
- Extended rear-facing to 105cm strongly recommended for safety
- Forward-facing from 76cm onwards (when developmentally appropriate)
- Always use 5-point harness
- Regular safety checks of all components
- Never use without proper base installation
Rear-Facing vs Forward-Facing:
- Rear-facing (birth to 105cm): Up to 5x safer in crashes
- Forward-facing (76-105cm): Available when child ready
- Extended rear-facing strongly recommended by safety experts
- Child can rear-face comfortably with legroom
i-Size Regulations:
- Complies with ECE R129 (i-Size) standards
- Height-based rather than weight-based sizing
- Mandatory extended rear-facing requirements
- Enhanced side-impact protection
- ISOFIX installation required
Perfect For
- Parents wanting maximum safety with extended rear-facing
- Families seeking birth-to-4-years single seat solution
- Those with Base T continuing from Cloud T i-Size
- Active toddler parents needing rotation convenience
- Safety-conscious families prioritising crash protection
- Parents with back issues benefiting from rotation
- Design-conscious buyers wanting premium aesthetics
- Long-term value seekers avoiding multiple seat purchases
Technical Specifications
- Safety standard: ECE R129 (i-Size)
- Age/Height range: Birth (45cm) to 105cm (approximately 4 years)
- Rear-facing: Birth to 105cm
- Forward-facing: 76cm to 105cm
- Installation: ISOFIX with Base T or Base Z2 (sold separately)
- Rotation: Full 360° with Base T
- Side-impact protection: Linear Side-impact Protection (L.S.P.)
- Headrest positions: 12 adjustable heights
- Recline positions: 5 positions (rear and forward-facing)
- Harness: 5-point with automatic adjustment
- Weight: Approximately 8-9kg (seat only)
- Origin: Designed and engineered in Germany
Why Choose the CYBEX Sirona T i-Size?
- Birth to 4 Years: Single seat from newborn to preschooler - maximum value
- 360° Convenience: Revolutionary rotation in rear and forward-facing modes
- Extended Rear-Facing: Up to 5x safer protection to 105cm
- i-Size Safety: Latest safety standards with rigorous crash testing
- German Engineering: Premium quality and innovative design
- L.S.P. Technology: Advanced side-impact protection reduces forces by 25%
- Part of Modular System: Use with existing Base T from Cloud T i-Size
- 12-Position Headrest: Grows perfectly with your child
- 5 Recline Positions: Comfort for sleeping and awake toddlers
Care & Maintenance
- Remove and machine wash covers at 30°C
- Wipe plastic shell with damp cloth
- Check Base T connection regularly
- Inspect harness for wear before each use
- Clean buckle with soft brush if needed
- Never use bleach or harsh chemicals
- Air dry all fabrics - do not tumble dry
- Regular safety inspection of all components
- Store instruction manual with seat
Extended Rear-Facing: Why It Matters
The Science of Safety:
In a frontal collision (70% of serious accidents), forces are distributed differently:
Forward-Facing Child:
- Head thrown forward with extreme force
- Immature neck and spine vulnerable to injury
- Harness must restrain entire body weight
- Higher risk of head and spinal injuries
Rear-Facing Child:
- Impact forces spread across entire back
- Car seat shell protects head, neck, and spine
- Body supported by seat during collision
- Up to 5 times safer in crashes
Why Extended Rear-Facing to 105cm?
- Child's neck not fully developed until age 4-6
- Muscles and ligaments still strengthening
- Head proportionally larger and heavier
- Maximum protection during crucial growth
- International safety experts recommend
- Swedish standard (world's safest) promotes extended rear-facing
Common Concerns Addressed:
- ✅ Legroom: Children comfortable with bent legs
- ✅ Car sickness: No higher risk rear-facing
- ✅ View: Many children prefer rear-facing
- ✅ Developmental: Rear-facing doesn't hinder development
The Sirona T makes extended rear-facing easy with 360° rotation access and multiple recline positions.
From Cloud T to Sirona T: Seamless Transition
Your T-Line Journey:
Stage 1: Birth to 18-24 Months
- Use Cloud T i-Size on Base T
- 180° rotation for infant convenience
- Travel system compatibility with pushchair
- In-car recline function
Transition Time: 18-24 Months
- Child approaches 87cm height limit for Cloud T
- Purchase Sirona T i-Size
- Remove Cloud T from existing Base T
- Click Sirona T onto same Base T
- No reinstallation needed
- Immediate 360° rotation benefit
Stage 2: 18 Months to 4 Years
- Extended rear-facing to 105cm
- Full 360° rotation convenience
- 12-position headrest grows with child
- Forward-facing option when appropriate
- Use until approximately age 4
The Base T Advantage:
- Install once, use for 4 years
- No learning curve with new base
- Consistent safety and convenience
- Maximum value from single base
- Sustainable choice
Available Colourways
Comfort Fabric Colours (2 options):
- Sepia Black - Sophisticated deep black
- Mirage Grey - Contemporary neutral grey
Plus Fabric Colours (5 options):
- Leaf Green - Fresh, modern green
- Platinum White - Clean, elegant white
- Peach Pink - Soft, gentle pink
- Mirage Grey - Neutral grey with enhanced breathability
- Sepia Black - Deep black with premium mesh inserts
All colourways feature CYBEX's signature premium construction and coordinate beautifully with the T-Line system and CYBEX pushchairs.
Why Parents Choose Sirona T Over Competitors
vs Standard Convertible Seats: ✅ 360° rotation (most don't rotate at all) ✅ Extended rear-facing to 105cm (many stop at 90cm) ✅ Part of modular system (use same base as infant seat) ✅ German engineering standards ✅ L.S.P. technology superior to basic seats
vs Other Rotating Seats: ✅ Part of T-Line system (base continuity) ✅ Premium fabric options ✅ 12-position headrest (more than competitors) ✅ 5 recline positions ✅ Proven CYBEX safety reputation ✅ Aesthetic design premium
vs Budget Options: ✅ Superior crash test results ✅ Rotation prevents daily back strain ✅ Premium materials last through multiple children ✅ Higher resale value ✅ Peace of mind worth investment
The CYBEX Difference
CYBEX doesn't just meet safety standards - they redefine them. As pioneers of rotating infant carriers (since 2018) and extended rear-facing advocates, CYBEX combines German engineering precision with real parent needs.
Innovation Leadership:
- First rotating infant car seat (2018)
- Advanced L.S.P. side-impact technology
- Modular system thinking
- Award-winning designs
Safety Excellence:
- Exceeds minimum requirements
- Independent crash test winner
- Real-world accident analysis
- Continuous improvement philosophy
Design Philosophy:
- Function drives form
- Parent-centric features
- Premium materials standard
- Aesthetic without compromise
Experience the perfect combination of extended rear-facing safety, 360° convenience, and birth-to-4-years value with the CYBEX Sirona T i-Size - where German engineering meets modern parenting.
Requires Base T or Base Z2 (sold separately). i-Size approved (birth to 105cm). 360° rotation. Extended rear-facing. Premium German engineering. Read more at cybex-online.com
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 5
Finally found my endgame mouse
Color: Classic Black, Color: Classic Black
Finally found my endgame mouse — perfect for lightweight lovers and RTS gamers.
I've gone through a lot of mice over the years — office mice, productivity mice, various gaming mice — and I kept running into the same problem: they were either too heavy or too bulky for my taste. The Orochi V2 is the first mouse where I thought, "this is it."
The weight and size are just right if you prefer a light, nimble feel in your hand. It doesn't fatigue your wrist over long sessions, and the compact form factor gives you great control without feeling like you're pushing a brick around your desk.
If you play StarCraft 1 or other real-time strategy games that demand fast, precise movements, I genuinely think this is one of the best options you can find on Amazon. The responsiveness and accuracy make a noticeable difference when every click counts.
Battery life is also excellent for a wireless mouse, and switching between Bluetooth and the 2.4GHz dongle is seamless. Overall, this is the mouse I keep coming back to — and I don't see myself switching anytime soon.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
★★★★★ 1
Very glitchy mouse won't accept clicks, made me reinstall windows
Color: White
TLDR: Ask ChatGPT about this mouse and it'll tell you that other users have reported issues with this mouse not clicking properly. It will tell you that this is a known issue with this mouse.
So I'm an IT expert (programmer, been using PC's since Windows 3.1). And I could not get this mouse to work right. The mouse doesn't work right when the computer goes to sleep, and then wakes from sleep. This problem occurs on Windows 11 pro.
When the mouse is connected in Bluetooth mode: First problem is, the mouse will NOT reconnect to the PC when the PC wakes from sleep, unless you have "Show notifications to connect using Swift Pair" disabled in windows Bluetooth settings. But setting is on by default. Second problem is, even with this setting disabled, and even if the mouse successfully reconnects when the computer wakes up, the computer will NOT accept clicks when it wakes up. This mouse apparently drops a phantom click that it never releases. The only way I could find to get rid of that phantom click is by pressing CTRL+ALT+DEL every time the computer wakes. This resets the phantom click and the mouse would function normally. But it's super annoying to have to press CTRL+ALT+DEL every time the PC wakes, especially since this mouse is supposed to be a gift to my little girl, I don't want her to have to deal with it not working perfectly. Also the mouse would sometimes stop accepting clicks even in the middle of playing games, but this only happened rarely in Bluetooth mode.
On the wireless USB mode: The mouse cursor is NOT visible when windows first boots. You can't use the mouse to get to the box to type your PIN number to unlock the computer. You must use the keyword to get into windows, and then the cursor appears. This problem doesn't happen when using the mouse in Bluetooth mode, only in the wireless USB mode. And then the phantom click issue is MUCH more frequent in the wireless USB mode, and doesn't require the computer to wake from sleep, but happens randomly even in the middle of playing games... suddenly you can't click anything. And when waking from sleep, or when the mouse "goes to sleep", when it wakes up there's issues with clicks... and sometimes the cursor isn't even visible.
Connecting a second mouse: When the computer stops accepting clicks, then even the second mouse would not be able to click. All connected mouses would stop being able to click. But this problem of not being able to click, would ONLY occur if the Razor Orochi V2 mouse was connected to the computer either via Bluetooth or wireless USB. If I disconnected the Orochi V2 mouse, then the problem never happens. So it's definitely this mouses's fault.
But initially I didn't realize this mouse was the culprit. Because it affected all connected mice. So I thought, at first, that it was a windows issue... maybe a bad driver I had installed in the past. So I ended up reinstalling windows, trying to fix any potential driver issues. It wasn't until after that, when I discovered that the problem was this mouse all along. I was super upset to have reinstalled windows, and lost all my software and settings, only to then discover that the problem was still there and it was this mouse all along.
As for getting my money back, amazon did not offer me an option to return the mouse and get a replacement. It only lets me send it back for a full refund. No option for replacement. So I think I bought this mouse when it was on sale. So it seems like they are expecting me to send it back, and then repurchase it at the new higher price, if I want to try it again. It's possible mine was simply defective.
I did every imaginable thing to try to get this mouse to work. The mouse I had was brand new from Razor, but it was running an old firmware. I did a firmware update to version 1.03.00 (it was running version 1.02.00 when it arrived). I can confirm that firmware update did NOT fix the problem with the phantom clicks.
I also set all the related devices in my device manager to not go to sleep, including the USB slots. That did NOT fix the problem with the phantom clicks.
I also, at the advice of chatGPT, did a bunch of registry edits, none of which fixed the problem.
I also, at the advice of chatGPT, wrote my own c# application, which attempted in various ways to force the mouse to release the phantom click, at least when the computer would wake up. I was trying to mimic the behavior of pressing CTRL+ALT+DEL. After many hours of coding, I was unable to programmatically correct the problems with this mouse.
I really wanted this mouse to work because it's wireless, and its small, so it fits my daughter's hand.
I'm now having to return this mouse at my time and expense, no option for replacement, lost whatever discount I got from the previous sale, and I lost days of my life trying to fix this mouse, and I lost some of my software and settings from the reinstallation of windows, so I have work to do just to get my daughter's computer back to normal again. Terrible experience.
Conclusion: Ask ChatGPT about this mouse and it'll tell you that other users have reported issues with this mouse not clicking properly. It will tell you that this is a known issue with this mouse.
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Reviewed in the United States on November 7, 2025
★★★★★ 5
Works flawlessly for drafting use...
Color: Black, Style: Wireless, Pattern Name: Mouse
This mouse has been a great upgrade for my setup. The wireless connection is fast and reliable, and I honestly can’t tell the difference from a wired mouse. The sensor is very responsive, and everything feels smooth and precise, especially combined with the Logitech G mouse pad.
I actually use this all day at work for drafting, so precision and comfort really matter, and this mouse delivers on both. I’ve even purchased several more for my drafting team, and everyone has been really happy with it.
I also like the customizable weight system—you can adjust it to feel just right in your hand. Overall it feels solid, well made, and comfortable for long hours of use.
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Reviewed in the United States on March 17, 2026
★★★★★ 5
This is the last mouse you will ever buy
Color: Black, Style: Wireless, Pattern Name: Mouse
Just buy it.
What can be said about this mouse that hasn't been said before? This is the perfect mouse, there is no contest. I know it is a bit on the pricier side, but if you need a mouse, just get the cheapest one you can get and start saving to get this one, IT'S THAT GOOD.
The mouse glides over any decent mouse pad, you don't need to get a Logitech one. The shape is perfect for all kinds of grips and the weight system is great for customization.
The led has different brightness levels, including turning it off completely to save more battery, and the keys are just silent and satisfying to press.
Again, this is the best mouse ever, no other mouse will offer a better value for your money than this one. A bit steep, yes, but worth it.
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Reviewed in the United States on March 20, 2026
★★★★★ 5
One of the best mice I've ever owned
Color: Black, Style: Wireless, Pattern Name: Mouse
I was a little skeptical about this mouse but after 3 weeks of use it's continued to be my favorite mouse. Not only does it. Have a good feel. It is very durable and customizing. The weight is fantastic. If you get the charging pad it just glides. But is definitely worth its money
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Reviewed in the United States on April 19, 2026