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Description
cybex siron s Sirona S 360° SensorSafe Convertible Car Seat | Snuggle BugzThe CYBEX Sirona S is the only convertible car seat to feature a 360 rotatable seat with load leg stability, linear side impact protection, and SensorSafe technology. Description: The Cybex Sirona S is the first Convertible Car Seat in North America to feature an innovative 360 rotatable seat with a load leg, making switching between rear facing and forward facing positions quick and easy. The Sirona S load leg stabilizes the seat and can
The CYBEX Sirona S is the only convertible car seat to feature a 360° rotatable seat with load leg stability, linear side impact protection, and SensorSafe technology.
Description:
The Cybex Sirona S is the first Convertible Car Seat in North America to feature an innovative 360° rotatable seat with a load leg, making switching between rear-facing and forward-facing positions quick and easy. The Sirona S load leg stabilizes the seat and can significantly reduce crash forces. These features, combined with an EasyLock bar for quick, simple and secure installation, offer advanced safety protection for children - and greater peace of mind for parents.
With SensorSafe technology, you'll gain instant insight into your child's well-being-right to the SensorSafe app on your phone. Built into the chest clip of Cybex car seats, SensorSafe provides alerts when unsafe situations arise including if a child unbuckles themselves; if the back seat has become too warm or too cold if a child has been seated for too long, and if the driver accidentally leaves the child behind.
Features:
- Innovative, one-hand 360° rotatable seat allows parents to easily get their child in and out
- Load leg stabilizes the car seat and can reduce rotation in certain crashes by up to 30%
- Only Convertible Car Seat in North America with a one-time vehicle belt installation for both rear-facing and forward-facing mode
- EasyLock bar reduces the force needed up to 4x for quick, simple and secure installation
- Smart-tech harness chest clip with SensorSafe technology alerts parents if their child becomes unbuckled, the car temp gets too warm or unsafe conditions arise
- 12-position recline adjustment even while the seat is in use
- Linear Side-impact Protection absorbs up to 25% more impact in a collision* [*when compared to the same car seat without L.S.P. extended]
- Anti-rebound design reduces car seat rebound movement
- Magnetic buckle holders make entry and exit from the seat a breeze
- Dishwasher safe cup holder can be positioned on either side of the seat
- 12-position, height-adjustable headrest with no-rethread harness
- Dual-level indicators help ensure the proper car seat angle
- Steel reinforced frame provides strength and durability
- Harness pads and 3-position padded buckle provide extra comfort
- Removable newborn insert provides support for small babies
- The innovative one-pull LATCH removal system
- LATCH Connection storage inside the base when not in use
- SensorSafe technology uses a Bluetooth enabled chest clip to send mobile app alerts when potential unsafe situations arise
Specifications:
- Rear-facing: Suitable from 4 lbs. to 50 lbs
- Forward-facing: Suitable from 22 lbs. to 65 lbs
- Use from birth up to 65 lbs. or 49 inches, following the directions in your user manual
- SensorSafe is compatible with most vehicles 2008 or newer with an OBD II port. For some electric vehicles, contact Cybex as an additional adapter may be needed
- Car Seat Weight: 30.4 lbs.
- Dimensions: 21.1" H x 33.6" L x 20.1" W
- Item Weight: 36.2 lbs
Additional Information:
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SensorSafe™ Technology:
- Smart-tech harness chest clip with SensorSafe™ technology provides alerts when unsafe situations arise including if a child unbuckles themselves while the vehicle is in motion; if the back seat has become too warm or too cold, if a child has been seated for too long, and if the driver accidentally leaves the child behind after the vehicle has been switched off.
- These alerts are provided through an installed vehicle receiver and a user-friendly smartphone SensorSafe App.
Related Content:
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
4.9 ★★★★★
Based on 878 reviews
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Product Reviews
★★★★★ 5
Full Coverage
Size: Large, Color: B2207sp
They're nice and light, super stretchy, and not too tight around the edges. Im a size 14 and got a large amd They're a smidge tight, but I think if I would get an xl theyd fit perfectly, They're still comfy as is. One stipulation I had is I wanted them to cover my whole butt cheeks, nothing cutsie short cut, not for this. They cover my entire booty cheeks and stay there pretty well. Oh and also no camel toe! Id buy them again and would recommend them to anyone.
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Reviewed in the United States on December 15, 2025
★★★★★ 4
Make sure you size up!!
Size: 4X-Large, Color: B004
Allllllmost 5 stars if the sizing was correct. I’ve been on the hunt for a decent fitting pair of women’s boxer briefs. I would say these are more so boyshorts. That being said, I wanted something loose for sleeping in so I got TWO sizes up. I normally go for a 2x and got a 4x and they’re perfect fitting. So, you didn’t get what I was looking for but did end up with some decent fitting undies. So I can’t complain too much. Just not the boxer briefs I was hoping for. Super stretchy and soft. Comfortable for sleeping in.
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Reviewed in the United States on March 3, 2026
★★★★★ 5
Really comfortable, good fit
Size: 6X-Large, Color: 5 Pack(black,black,blue,blue,light Coffee)
These are very lightweight and comfortable. The material stretches freely and doesn't bind up anywhere. If you go by the size guide, they should fit perfectly neither too loose nor too tight. Would definitely recommend.
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Reviewed in the United States on April 23, 2026
★★★★★ 3
These don't work for me...
Size: Medium, Color: B005
First the good... I like the material; it's very soft, light, and stretchy. I also like the colors, but that's all I like about these boyshort panties. My main goal for panties is to have them NOT ride up into my butt crack leaving the bottoms of my butt hanging out. It's probably comfortable for some, but it drives me nuts to feel this constant need to pull them out of my butt crack and down over my butt cheeks. If I wanted my butt hanging out I'd buy thongs, LOL. The part I really don't understand, is why they make the front and the back the same width/length. I mean clearly more material would be needed in the back to fit around two round humps, right? I mean I guess unless you have what I call a pancake butt, I don't see why there shouldn't be more material on the backside of the underwear. Why is it so dang difficult to find underwear in this style to fit up over butt cheeks? If I pull them down enough to cover the bottoms of my cheeks then the waistband is sitting right at the top of my crack which is extremely annoying (then I feel this constant need to pull them up!) especially when the front is long enough to go up to my belly button!! Who are they making these underwear for??? Ladies with FLAT butts apparently. For reference, I'm 5'5" 130 lbs, hips 37", waist 27", athletic build, as in lean but with muscular glutes & quads from speed skating. Not only are they not made big enough to go up over my rump while still keeping my cheek bottoms from hanging out, but they're too long in the front cause they constantly roll up in the front. I've even tried turning them around, even though they seem to be exactly the same front to back, and they fit exactly the same, no surprise there. I may just be out of luck finding comfy boyshort panties that actually fit the way I want them to. :/
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Reviewed in the United States on December 15, 2025
★★★★★ 5
Super comfy!
Great colors, super comfy, soft and druable!!
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Reviewed in the United States on May 2, 2026
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