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Ships within 48 hours · Estimated delivery Sep 15 - Sep 20
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Description
cybex convertible 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
4.5 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 1
PLEASE REVIEW — FORMULA CHANGED!!!
I wish I would’ve posted a review PRIOR to the formula changing but just know that I LOVED this serum. I’ve struggled with hormonal acne (PCOS) and eczema for as long as I can remember. Finally, last summer my dermatologist put me on (3) different RX including Spironolactone and Accutane. I was so tired so I stopped everything except for CeraVe cleanser, retinol (Tretinoin) and CeraVe healing ointment. My made up skin routine was working until I used too much Tretinoin and burned my face. I had read great reviews about this product so I thought, I might as well try it — and IT WORKED! I’ve been using this product for almost a year and I loved it. However, 3 weeks ago when I ordered it, I noticed the bottle had a green tint. I could tell after one use that the feel of the serum was different, more watery, not as thick as it used to be. The smell was also different. Still, I kept using it for nearly 2 weeks and I experienced 2 breakouts! Sure enough, I stopped the product and within a few days, my skin was back to normal. I am very upset because as someone who has extremely sensitive skin, this worked but unfortunately, the new formula isn’t for me.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Very gentle with a light gloss absolutely worth the cost.
I chew gum around 6hrs a day at work to keep my ears popped and have to wear a facemask (extra moisture) which usually ends up leaving the corners of my mouth raw, red, n looking like a cold sore from drying repeatedly there. This feels so soothing and doesn't cause inflammation or drying like using chapstick repeatedly does. It lasts a fair while and I cannot emphasize how much it helps with both healing and protecting. Feels like it actually ADDS moisture and then seals it in without any waxy residue. If your lips are a problem child, this is a holy grail.
Notes:
- Light Gloss finish
- Product feels very soft/buttery, probably best to keep away from hot locations.
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Reviewed in the United States on September 8, 2025
★★★★★ 5
New favorite lip balm!
Excellent lip treatment. Doesn’t cause breakouts like some balms do for me. Soothes chapped lips well. Bought for my whole family!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
★★★★★ 5
So Much Better than Every Other Lip Balm
It’s a little pricey, but the best lip balm I’ve ever tried. It is lightweight, moisturizes excellently, and keeps my lips soft and comfortable. I used to use Nivea but it was heavy and greasy, and I had to apply it much more often. I’ve also tried La Mer. This is just as good but only a fraction of the price.
I first bought this when I was doing Accutane. If you’ve ever been through that experience, you know your lips are miserable for months on end, and you have to apply lip balm every fifteen minutes. I tried a dozen cheaper lip balms, but finally decided to try this. It is sooo much better. I could go over an hour without feeling uncomfortable.
Even when I’m not doing Accutane, I have very sensitive lips. During the winter I have to apply other lip balms every hour. With this one I only have to apply every four hours. If I forget to bring it with me, I can go all day without my lips feeling too bad.
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Reviewed in the United States on December 1, 2023
★★★★★ 4
Lip barrier repair not just protection
I've tried avene, okeefes, aquaphor, and this is my favorite. I use adaplene gel to treat my acne and have increased my use to daily. My skin tolerated it well but my lips became very dry (even trying to avoid adaplene gel from getting on my lips), especially on the lip line. I've been looking for a lip balm that repairs the skin, not just protects it and this is my favorite. I apply it less than the others and it works the best. I like aquaphor but I think it is more protecting instead of repair. When I was searching for a lip balm I used the ordinary barrier support serum which worked but is not as convenient/easy to apply as an actual lip balm.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 9, 2026
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