Pay in installments of $5.64 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 18 - Jul 23
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
sirona s cybex 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
4.3 ★★★★★
Based on 27 reviews
Sort
Product Reviews
★★★★★ 5
Wonderful work from a great historian
Format: Hardcover
James Holland is a very talented historian and his books on WWII are amazing.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 21, 2026
★★★★★ 5
How to capture the import of an entire war by writing on its end
Format: Kindle
The authors seamlessly cover ed the macro and micro accounts of events and participants to capture the stunning and all important end of WWII. I was engaged and stimulated throughout my read of this book and highly recommend it for enthusiasts who are conversant with the war and want a better understanding of its close.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 27, 2025
★★★★★ 4
World War II - The Final Months
Format: Hardcover
The book takes you through the final months of World War II, focusing on eight key moments when the fighting finally came to an end. It’s not just a dry rundown of facts or battle maps — the authors do a great job of bringing the people involved to life, from famous leaders to everyday soldiers and civilians caught in the chaos.
What I really liked was how the story moves around the globe, covering Europe, the Pacific, and beyond. It keeps the narrative fresh and exciting, giving a real sense of how the war unfolded on many fronts at once. Sometimes I had to pay close attention to keep up with all the locations and characters, but that only added to the feeling of being caught up in a fast-moving, gripping story rather than a history lesson.
What stood out most was how it made me feel the human side of history—the fear, the relief, and the confusion as the war finally ended. It’s full of details, but it never felt boring or too technical.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 19, 2025
★★★★★ 5
The Fix
Format: Hardcover
An insightful and interesting book on how our country's first legislators try to make sense of the new and fairly short U.S. Constitution, which, being drafted by humans, was bound to be imperfect. A lack of clarity on some point might be due to the changeable nature of words themselves or to confusion or obscurity of thought by the authors. And, who were the authors? The men in the room who came up with the product or the various state conventions that approved the final product?
Professor Gienapp writes well and with a fine grasp of his subject. He uses concrete examples to illustrate his main points. For example, Congressional debates over the constitutionality of a proposed federal bank, the ratification of Jay's Treaty, and even whether the Bill of Rights was to be incorporated into or simply added to the original document.
Most people think of U.S. constitutional history in terms of its drafting and ratification and/or its later judicial interpretation by the Supreme Court. Here, Professor Gienapp focuses on the initial work of interpretation by the first few sessions of Congress.
This book is essential reading for those interested in the U.S. Constitution and the internal architecture of our government. I think those who spend countless hours viewing frenetic talking heads say this or that about the constitutionality of some issue or another (or the nomination of a justice to the High Court) should throw their television set out the window and, instead, settle into a corner chair and calmly read this and other such thoughtful books.
This one should win prizes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 14, 2018
★★★★★ 5
Excellent Book
Format: Hardcover
Stanford University History Professor Gienapp has done an outstanding job of researching and writing this historical analysis of the interpretation of the American Constitution by America's first Congress. Professor Gienapp analyzes data primarily from Congress's problems interpreting the removable of executive officers, chartering a national bank and approval of the 1794 Treaty with Great Britain negotiated by Chief Justice John Jay, the "Jay Treaty." Gienapp shows in clear writing how Congress used records of the debates at the Constitutional Convention and State Ratification Conventions to resolve these constitutional issues. I highly recommend this book to anyone concerned with the interpretation of the American Constitution.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 18, 2020
recommand products
Evenflo Gold Shyft DualRide Infant Car Seat and Stroller Combo with Extended Canopy
21.04
Baby Trend Journey All-in-One Stroller to Wagon Travel System with EZ-Lift Pro Infant Car Seat
20.30
Stroller Mittens – Voksi
27.66
Graphite / Black / Sky Blue Dragonfly Seat & Bassinet Stroller Complete
21.35
Baby Trend EZ-Lift 35 PLUS Infant Car Seat Base
22.63