autositz cybex sirona Cybex Sirona S SensorSafe Convertible Car Seat – Twinkle Twinkle Little One
SKU: 18699943282
autositz cybex sirona

autositz cybex sirona Cybex Sirona S SensorSafe Convertible Car Seat – Twinkle Twinkle Little One

Sale price$18.76 Regular price$20.84
Save 10%

Pay in installments of $5.21 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jun 30 - Jul 5

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

autositz cybex sirona 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:
  1. 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
SKU: 18699943282

Discover Niche Categories That Outsell autositz cybex sirona

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 976 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
S
Verified Purchase
Skurtzo
West Palm Beach, US
★★★★★ 4
A little snug on the thighs
Size: Medium, Color: Multicoloured G (5-pack)
Super comfy, soft and thin. For reference, I'm 5'6", 135, athletic build. I bought medium. I almost returned them because I thought they were a bit too snug on my thighs, and my thighs are not large at all. I was concerned about panty lines under snug clothing. But, because they're thin, I figured they would probably stretch, so I kept them. So far, I've only worn them under a night shirt, but they're super comfortable and they dont ride up at all. Very nice, but if your thighs are a little thick, you probably won't like them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 29, 2025
S
Verified Purchase
Shanna
Draper, US
★★★★★ 5
Functional + Sexy
Size: Small, Color: Multicoloured E-(5-pack), Size: Small, Color: Multicoloured E-(5-pack)
Not only do these feel good, my husband can’t keep his hands off me. They fit so good and are soft. I change into these to sleep but also just use them as shorts to wear around the house. They’re comfortable and don’t slide around. I got a size small and I’m 100lbs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
C
Verified Purchase
ClairY
Alexandria, US
★★★★★ 5
Finally!
Size: X-Large, Color: All Black D (5-pack)
Finally, comfortable underwear that don’t end up giving me a wedgie. I have a round booty and most cuts of underwear end up shifting as I walk and sit. The hem of the underwear comes right under my cheeks and the lightweight material ensures there’s no panty line and no shifting to where I don’t want them! I’m definitely purchasing more.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
A
Verified Purchase
Amazon Customer
Grantham, US
★★★★★ 3
Ehh
Size: Medium, Color: Multicoloured E-(5-pack)
Very thin, still comfy but very thin material. Super soft though. I've worn and washed and they have held up but I won't be repurchasing bc these are so thin
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
G
Verified Purchase
Grma4m&m
Pawtucket, US
★★★★★ 5
They’re fantastic!!!!
Size: X-Large, Color: Multicoloured E-(5-pack)
My clothing size is 16/18 and XL. Even though Amazon suggested a size XXL, I ordered my normal XL and they fit perfectly. The fabric for this style is 92% bamboo viscose and is amazingly soft and almost silky feeling. I had ordered a different boy short in this brand but they were 80% bamboo viscose and the fabric was significantly heavier. I returned those and ordered these.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026

recommand products