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Description
cybex convertible seat Cybex Sirona S SensorSafe Convertible Car Seat – Twinkle Twinkle Little OneThe CYBEX Sirona S is the ONLY convertible car seat to feature a 360 swivel seat with a load leg, linear side impact protection, and SensorSafe technology. Built into the chest clip, SensorSafe provides real time in app alerts when potentially unsafe situations arise including if a child unbuckles the chest clip, if the back seat becomes too warm or too cold, and if the driver unintentionally leaves the child behind. These features offer advanced
The CYBEX Sirona S is the ONLY convertible car seat to feature a 360° swivel seat with a load leg, linear side impact protection, and SensorSafe technology. Built into the chest clip, SensorSafe provides real-time in-app alerts when potentially unsafe situations arise including if a child unbuckles the chest clip, if the back seat becomes too warm or too cold, and if the driver unintentionally leaves the child behind. These features offer advanced safety protection for children and greater peace of mind for parents.
- ONE-HAND 360° SWIVEL SEAT: For easy loading and unloading of your child
- LOAD LEG: Absorbs energy and reduces crash forces on the child by up to 30% in a front impact collision*
- ONE-TIME VEHICLE BELT INSTALLATION: Allows seamless transition from rear-facing to forward-facing mode without having to re-install
- EASYLOCK™ BAR: Reduces force needed up to 4x for quick, simple and secure installation
- SENSORSAFE TECHNOLOGY: Bluetooth enabled chest clip sends mobile app alerts if a child unbuckles the chest clip, if the back seat becomes too warm or too cold, and if the driver unintentionally leaves the child behind
- 12-POSITION ON THE FLY RECLINE: Adjust even when the seat is in use
- LINEAR SIDE-IMPACT PROTECTION (L.S.P.): Reduces collision forces by up to 25% in a side impact crash*
- ANTI-REBOUND BASE: Reduces rebound forces in a rear or front impact crash
- REAR-FACING LONGER: Up to 50 lbs.
- MAGNETIC BUCKLE HOLDERS: Keeps harness out of the way for easy loading and unloading of your child
- DISHWASHER SAFE CUP HOLDER: Can be positioned on either side of seat
- 12-POSITION ADJUSTABLE HEADREST: Harness adjusts with the headrest for a proper fit as your child grows
- DUAL-LEVEL INDICATORS: Clearly indicate the proper car seat angle from either side of the seat
- STEEL REINFORCED FRAME: Provides strength and durability
- 3-POSITION PADDED BUCKLE: Allows for a secure fit while providing extra comfort for your growing child
- REMOVABLE INFANT INSERT: Ensures proper fit and support for babies
*As compared to the same car seat without this feature
Usage
- Child Age Minimum: newborn
- Child Age Maximum: 8 years
- Child Weight Minimum: 4 lbs.
- Child Weight Max: 65 lbs.
- Rear-Facing Mode Weight Limitation: 4-50 lbs.
- Rear-Facing Mode Height Limitation: 17"-49"
- Forward-Facing Mode Weight Limitation: 22-65 lbs
- Forward-Facing Mode Height Limitation: 28-49 in
- Forward-Facing Mode Age Limitation: at least 22 lbs
- Forward-Facing Mode Fit Limitation: top of ears below the top of the headrest
Specifications
- Dimensions: 24.5"D x 19"W x 25.5"H
- Weight: 30.4 lbs.
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 29 reviews
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Product Reviews
★★★★★ 4
Puppy loves her baby
Purchased for a 9 week old puppy, she is now 18 weeks, took the heartbeat out and it’s her baby, drags it everywhere and hasn’t ripped it to shreds.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 13, 2026
★★★★★ 5
Incredible smoothly
I recently purchased the Heartbeat Puppy Calming Kit, and it has been a game-changer for my anxious puppy! The heartbeat toy is incredibly soothing and helps my puppy sleep soundly through the night. The lick mats and treat ball keep her entertained and busy, which has significantly reduced her separation anxiety. The quality of all the items is excellent, and they are durable enough to withstand daily use. This kit is a must-have for any new puppy owner looking to provide comfort and training aids. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 20, 2025
★★★★★ 5
Durable and Great for Teething!
Size: X-Large, Color: Textured Ring, Size: X-Large, Color: Textured Ring
This Nylabone Power Chew Textured Ring is a great find! It’s a pretty big ring, which is perfect because my puppy can grow into it. She already loves it and spends a good amount of time chewing on it.
She’s a big teether, so I was specifically looking for something she could gnaw on that wasn’t plastic, and this has been so much better than the other things she tries to get her teeth into.
It seems durable, keeps her occupied, and the price is great for the quality. I’ll definitely be buying another one when needed!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
★★★★★ 5
Durable toy!
Size: Small, Color: Textured Ring, Size: Small, Color: Textured Ring
Great toy for my beautiful Canela, she found it fun to play and chew all day long, the material is very strong, she could not destroy it, I did not smell beef or meat.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
★★★★★ 5
As durable as expected.
Size: Large, Color: Femur Bone, Size: Large, Color: Femur Bone
My dog loves it—more than any other bone she’s ever had. It’s not quite as durable as regular nylabone, but we expected that. This photo was taken after around 2 hours of super aggressive chewing by a very big German shepherd. It has no discernible smell, but obviously it has a flavor because she doesn’t want to put it down even for trips outside. It’s soft enough that it doesn’t cause that “are their teeth breaking?!” sound that a lot of offbrand nylon chews have. The classic femur shape is perfect. It’s the easiest shape for her to hold naturally. All around, perfect dog chew.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026
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