Automotive Holiday Deals Books Gift Guide Books Gift Guide Shop Men's Athletic Shoes Learn more nav_sap_SWP_6M_fly_beacon Black Friday egg_2015 All-New Amazon Fire TV Grooming Deals Gifts Under $50 Amazon Gift Card Offer bf15 bf15 bf15 $30 Off Amazon Echo $15 Off All-New Fire Kindle Black Friday Deals Buy one Get one Free\ Outdoor Deals on DOTD
Baby Deals
Currently unavailable.
We don't know when or if this item will be back in stock.

Have one to sell? Sell on Amazon

Britax Boulevard 70 CS Convertible Car Seat, Onyx (Prior Model)

from Britax USA
36 customer reviews

Currently unavailable.
We don't know when or if this item will be back in stock.
  • 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
  • Energy-Absorbing Versa-Tether features a staged-release tether webbing to slow the forward movement, reducing the crash forces reaching the child, and a two-point attachment to minimize forward rotation while anchoring the top of the child seat
  • 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
See more product details
This item’s packaging will indicate what is inside and cannot be hidden.

Holiday Gifts for Baby

Baby Gift Guide
Find the perfect gifts for perfect kids in the Baby Gift Guide. See more.
Currently unavailable. We don't know when or if this item will be back in stock.

Product Description

Product Description

The Britax Boulevard 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 Boulevard 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 Boulevard 70 CS also incorporates Britax True Side Impact Protection, a Click and Safe Snug Harness Indicator, and HUGS. An easy access cover and access to belt paths from the front of the seat make it easier to install. It is also equipped with a five-point, no-rethread and quick-adjust harness, multiple buckle and recline adjustments, and a body pillow for comfort.

The BRITAX BOULEVARD 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, True Side Impact Protection, 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.

callout box top

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

callout box bottom
Britax Boulevard 70 CS Convertible Car Seat Swatches
Available in (from left to right):
Blueprint, Emily, Silver Birch,
, Sophia, and Waverly.
Britax Boulevard 70 CS Convertible Car Seat
Safety features include SafeCell Technology and Side Impact Cushion Technology.
View larger.
Britax Boulevard 70 CS Convertible Car Seat
Comfort features include dual recline positions and high-density comfort foam. (Shown here in Waverly.) View larger.
BRITAX 360 Degree Protection
The BRITAX BOULEVARD 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 BOULEVARD 70 CS features SafeCells, which are engineered structures located in the base of the seat designed to compress in the event of a crash. The BOULEVARD 70 CS also features integrated steel bars, which strengthen the connection to the vehicle 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.

True Side Impact Protection for Advanced Security
Offering True Side Impact Protection, the BOULEVARD 70 CS delivers advanced protection if you happen to face an unexpected side-impact crash. True Side Impact Protection is a system composed of a rigid seat shell with deep side walls, an adjustable head restraint, and an extra layer of energy-absorbing EPP (Expanded Polypropylene) foam lining the head restraint. These combined features work together to protect your child's head and chest from incoming side-impact crash forces by distributing the forces over a larger surface area, helping shield your child from vehicle intrusion, contain your child's head and body in the seat, and minimize side-to-side movement of your child's head.

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 BOULEVARD 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 BOULEVARD 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 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 BOULEVARD 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 cover set with matching pads removes easily for cleaning without requiring you to disassemble or uninstall the car seat.

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

What's in the Box
One BRITAX BOULEVARD 70 CS Convertible Car Seat and manual.

Product Information

Technical Details
Item Weight18 pounds
Product Dimensions21 x 18.5 x 26 inches
Item model numberE9BB71A
Minimum weight recommendation5 Pounds
Maximum weight recommendation70 Pounds
Batteries requiredNo
Additional Information
Best Sellers Rank #66,283 in Baby (See top 100)
Shipping Weight22.8 pounds
Domestic Shipping Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
International Shipping This item is not eligible for international shipping. Learn More
Warranty & Support

Product Warranty: For warranty information about this product, please click here

Customer Reviews

Most Helpful Customer Reviews

52 of 53 people found the following review helpful By Bigslacker TOP 1000 REVIEWERVINE VOICE on February 10, 2012
My son was almost 1 year old and we had to upgrade the car seat. Didn't know much about the convertible ones I went to the store to see them in person.
Only Britax ones seemed to be sturdy and had enough cushion.

I went with Britax Boulevard 70 CS;
- it had more protection than Marathon (head and lower body cushions insert),
- it has clip and click option (it clicks when baby is strapped safe, no need to recheck with fingers between baby and straps), Marathon and regular Boulevard don't have this option,
- it doesn't have bulky wide additional support for head like Advocate CS.

Basically in the order from the simple model to the most advanced one it goes: Marathon, Boulevard, Boulevard CS and Advocate CS.

The Advocate has more protection, but I already have a safe car (Audi and than VW Tiguan) and didn't want to take additional space (the cars are not that huge inside). The car seat is placed behind the passenger seat and there is enough room to sit normal (not like with the infant car seat that is obviously longer).
Color Onyx matches nicely black interior.
Also considering the cost (Amazon had the best price I found) I think that was an excellent choice.

Convertible seats are not that easy to switch between cars and it was harder to install than our Chicco Key30, but now I have one car only so this is not a problem.

The seat is set in the medium recline, and it is comfortable for my son to sit and watch the road or to fall asleep.
He loved it from the day one; totally different experience to sit forward facing. It was a heart melting experience to see his happiness and surprise.
Read more ›
5 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
27 of 28 people found the following review helpful By Hannah on January 12, 2012
We transitioned our baby to this car seat at four months. He was a long baby, and the infant carrier seat was just never comfortable for him. He would cry and cry every time we got in the car. Once we switched to the Boulevard, he was SO much happier. I drive a tiny car (a Scion xA) and the seat fits comfortably behind the passenger seat. It's so simple to install, and although it's large, I can still easily see our baby via the mirror attached to the headrest.

We were hit the week before Christmas, and I'm happy to report that the baby was perfectly okay. I'm sure a lot of this is thanks to the sturdy, steel frame of the carseat, as well as the absorbing materials. I suffered whiplash and am still seeing a chiropractor for it (a month later).

Our baby is now almost 11 months, 22 pounds, and 31 inches and is still riding comfortably rear-facing.
5 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
17 of 17 people found the following review helpful By E.Kiriakou on March 4, 2012
Verified Purchase
Purchased this model (Britax Boulevard 70 CS) after considering the Britax Marathon 70, Britax Boulevard 70 (not CS), Radian, and the Recaro ProRide. Factors that influenced our decision to buy: price, user reviews ([...]) feedback from other moms I know, features, and ease of use. Coming from using a Chicco KeyFit30 infant car seat, I and other moms who have used Chicco infant seats say that we are spoiled because of the great hardware and ease of using it. And those other moms I know have moved to Britax for their convertible seats. I am excited for when we can turn the seat FF (forward-facing) & may try to revisit my review here after turning him around.

*CS feature - We got the CS feature because many family members like to buckle him in and we want them to recognize when the belt is snug enough. There is even a picture on the chest buckle that shows the user where it's supposed to be, and the click you hear when it's snug enough is a good way to help them check for snugness (Don't assume hearing the click as a green light that they're snug enough, you still need to check for any slack).
*Plush - even the shoulder pads are soft & thicker than what we had on our Chicco KeyFit30. There is a little circular pad that cushions the buckle near the crotch, which is nice, but kind of annoying because it gets in the way when I'm trying to buckle a wiggly toddler in.
*I value the ease of use and ease of installation because I was going to be the one loading my toddler in/out of it most of the time. Directions were easy to follow and if you can read, you can install it.
*Hardware is built well.
*Britax is a reputable company, and had positive reviews both online and from moms I know. [...] was a great online resource.
Read more ›
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
8 of 8 people found the following review helpful By Michelle Lee on April 19, 2012
Verified Purchase
We needed to be able to fit 2 rear-facing car seats in our 2010 Toyota Prius, and my husband needed to be able to push the driver's seat back far enough to drive (he's 6 feet tall). We put the Britax seat on the driver's side and our Graco Snugride 35 on the passenger side (it takes up more room than the Britax seat). Both seats fit (barely) and my husband can drive comfortably (I, on the other hand, am squished sitting in front of the Graco...I'm 5'2").

Things I like: A rear-facing high weight limit seat that fits in a compact car! Miracle of miracles! Easy install, easy to adjust, baby seems comfortable. At 30 inches he has plenty of leg room. Also this thing is built like a tank, so I feel that baby is well-protected. Did not require a rolled-up towel or pool noodle to get the right angle either.

Things I don't like: Hard to get baby in and out of seat because Prius door frame is so narrow and the sides of the car seat so high (I've bumped my head a few times). Seat is heavy, I'm so not taking this on an airplane.

We considered buying a smaller convertible car-seat, such as the Combi Cocorro, but we didn't want something our son would out-grow so quickly (it has a weight limit of 40 lbs). The Britax seems huge in our car but at least I know it will last him a long time.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse

Most Recent Customer Reviews

Want to discover more products? Check out this page to see more: infant car seat