Britax Advocate 70 CS Click and Safe Convertible Car Seat (Current Version), Onyx


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The Britax Advocate 70 CS convertible car seat is designed for children rear facing from 5 to 40 pounds and forward facing from 1 year and 20 lbs up to 70 pounds. The Advocate 70 CS achieves revolutionary head safety through the use of Britax SafeCell Technology\, integrated steel bars, and versa-tether that work together to minimize head excursion and reduce the risk of head injury during a frontal impact. The Advocate 70 CS also incorporates energy-managing Side Impact Cushion Technology, reducing incoming side impact crash energy by 45 percent by diverting crash forces away from the child. It is also equipped with Britax True Side Impact Protection, HUGS and a Click and Safe Snug Harness Indicator. It also features a five-point, no-rethread and quick-adjust harness, multiple buckle and recline adjustments, and a body pillow for comfort. An easy access cover and access to belt paths from the front of the seat make it easier to install.The BRITAX ADVOCATE 70 CS Convertible Car Seat achieves optimum head safety through the combination of BRITAX SafeCell Technology, integrated steel bars, and a Versa-Tether, which work together to minimize head excursion and reduce the risk of head injury during a frontal impact. It also features easy installation, Side Impact Cushion Technology, and the innovative Click and Safe Snug Harness Indicator. The seat fits children in the rear-facing position from 5 to 40 pounds, and children in the forward-facing position starting at one year old and 20 pounds, up to 70 pounds.

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ADVOCATE 70 CS
(Riviera)
Convertible Car Seat

At a Glance:

  • Age/Weight Requirements: In rear-
    facing position, fits children weighing 5 – 40 pounds; in forward-facing position, fits children 1+ years old weighing 20 – 70 pounds

  • Warranty: 1-year
    limited warranty
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Britax Advocate 70 CS Convertible Car Seat

Available in (from left to right):
Cowmooflage, Onyx, Opus Gray, and Riviera

Britax Advocate 70 CS Convertible Car Seat
Safety features include SafeCell Technology and Side Impact Cushion Technology.
View larger.
Britax Advocate 70 CS Convertible Car Seat
Comfort features include dual recline positions and high-density comfort foam.
(Shown here in Opus Gray.) View larger.

BRITAX 360 Degree Protection
The BRITAX ADVOCATE 70 CS features technologies that work to minimize injury to your child during a crash from any direction, including both frontal and side impact crashes – the most frequent types of crashes. These technologies work together with other features on the car seat to minimize injury to your child during a crash by:

  • keeping your child in the vehicle,
  • diverting crash forces away from your child,
  • helping to slow down your child’s body,
  • minimizing movement of your child, and
  • protecting your child’s brain and spinal cord.

SafeCell Technology for Advanced Head Safety
Designed with SafeCell Technology, the ADVOCATE 70 CS features SafeCells, which are engineered structures located in the base of the seat designed to compress in the event of a crash. This compression significantly lowers the center of gravity and counteracts the forward rotation of the car seat, delivering unprecedented performance in a crash.

The ADVOCATE 70 CS also features integrated steel bars, which strengthen the connection to the vehicle seat and reduce the forward flexing of the car seat. In addition, the energy-absorbing Versa-Tether anchors the top of the car seat and minimizes forward rotation of the car seat to reduce the crash forces that can reach your child if an accident occurs. These three features work together as a system to provide revolutionary head safety protection for your child.

Side Impact Cushion Technology for Advanced Security
Offering both Side Impact Cushion Technology and True Side Impact Protection, the ADVOCATE 70 CS delivers superior protection if you happen to face an unexpected side-impact crash. Side Impact Cushion Technology is comprised of energy-absorbing cushions on either side of the child seat that reduce side-impact crash energy by 45% by diverting crash forces away from your child and providing extra protection for the adjacent passenger. The side-impact cushions are designed to compress during a side-impact crash, transferring crash energy away from the seat before it reaches your child. The ADVOCATE 70 CS then uses True Side Impact Protection to keep your child’s head, neck, and spine properly aligned to limit injury during impact.

Click & Safe Technology for the Safest Fit
When it comes to children’s safety in the car, it’s vital that they are properly secured, because loose harness straps can leave them vulnerable to injury during a crash. The ADVOCATE 70 CS assists in the process of securing your child with the Click & Safe Snug Harness Indicator feature, which provides an audible sound when you are tightening the harness to indicate when it is in the range of appropriate snugness.

Premium Fit and Comfort Features
Whether children are watching the world go by or snuggling in for a nap, they’ll enjoy that the ADVOCATE 70 CS reclines in both the forward and rear positions. And thanks to additional features, which include high-density comfort foam and a plush cover set with a matching belly pad, they’ll always ride in style and comfort. A 70-pound weight capacity, two buckle positions, and a tangle-free five-point harness with ten harness height settings provide a snug, custom fit for your growing child. Plus, an optional Infant Positioning Insert (sold separately) allows you to properly and securely fit smaller infants into the car seat.

Ease-of-Use for Safety and Convenience
Packed with perks for parents, the ADVOCATE 70 CS makes it easy to secure your child in the proper position without the guesswork. Premium lower LATCH connectors make for a quick, simple, and tight installation, while the push-button allows you to easily uninstall the connectors. Easy-to-access built-in lock-offs allow you to install the car seat with ease using your vehicle’s lap and shoulder belt. The quick-adjust harness system and buckle allow you to reposition the harness height without disassembling the harness straps.

Additionally, an anti-slip contoured base grips and protects the vehicle seat, ensuring a tight installation in all types of vehicles. Convenient holders keep harness straps out of the way when you’re placing your child in the seat, and the plush covert set with matching pads removes easily for cleaning without requiring you to disassemble or uninstall the car seat.

The BRITAX ADVOCATE 70 CS Convertible Car Seat is backed by a one-year limited warranty.

What’s in the Box
One BRITAX ADVOCATE 70 CS Convertible Car Seat and manual.


  • Side impact cushion technology features energy-absorbing cushions on the exterior of the child seat to reduce side impact crash energy by 45% by diverting crash forces away from your child and providing extra protection for the adjacent passenger
  • Safecell technology features safecells designed to compress in a crash, significantly lowering the center of gravity and counteracting the forward rotation of the child seat which normally propels the child toward the front seat
  • Click and safe snug harness indicator is an audible aid that provides extra assurance when the harness is within range of appropriate snugness
  • Integrated Steel Bars strengthen the connection to the vehicle and reduce forward flexing of the child seat during a crash
  • True side impact protection offers an extra layer of EPP foam, keeping the head, neck and spine aligned, and deep side walls lined with EPP foam to distribute crash forces, shield from vehicle intrusion, and contain the head, neck and body

Britax Advocate 70 CS Click and Safe Convertible Car Seat (Current Version), Onyx

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