Car Booster Seat Britax Parkway Slide Guard Booster Seat, Onyx

Car Booster Seat
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Britax Parkway SG Booster Car SeatThe Parkway SG Belt Positioning Booster features industry-leading side impact protection and SlideGuard anti-submarining technology to manage crash forces and minimize injury. Supportive comfort foam and soft, padded materials promote proper seat use and enhance safety. Designed to fit three across in most vehicles, the booster seat is appropriate for children 40 lbs and up. A removable backrest, dual retractable cupholders, color coded belt guides and a one hand quick-adjust head restraint make the seat convenient and easy to use each and every time.Featuring an innovative design and industry-leading technology, the Britax Parkway SG Booster Seat (Onyx) keeps your child safe and secure during car rides. The seat’s True Side Impact Protection and SecureGuard anti-submarining technology manage crash forces and minimize injury to your child during a crash. Appropriate for children from 40 to 120 pounds, the seat’s narrow footprint allows you to fit three across in most cars–ideal for many of today’s small- to mid-sized vehicles.

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The Parkway SG
Booster Seat
At a Glance:
  • Weight/Height Requirements:
    Fits children 38 – 63 inches and 40 – 120 pounds
  • Warranty:
    Limited 1-year warranty

Ideal for:
  • Who:
    Parents of growing children, caregivers, grandparents
  • What:
    Providing a secure, comfortable booster seat that can grow with your child
  • Where:
    Mid-sized cars, minivans, SUVs
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Parkway SG Booster Seat

The Parkway SG Booster Seat provides 360 degrees of protection and keeps your child comfortable. View larger.
Adaptable safety belts

The SecureGuard clip works with the vehicle seat belt to keep the lap belt properly positioned across the child’s upper thighs.
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Britax Parkway SG Booster Seat (Onyx)
True Side Impact Protection and SecureGuard
The Parkway SG Booster Seat is ideal for parents concerned with providing proper safety and posture-support for their children during car rides. Offering True Side Impact Protection, this seat delivers superior protection if you happen to face an unexpected side-impact accident.

If such an event takes place, the solid head support and deep, side walls work efficiently to distribute crash forces, shield the child from vehicle intrusion, contain the head and body, and keep the head, neck, and spine aligned to limit injury.

In addition, the Parkway SG features SecureGuard technology, which works with your vehicle’s own safety belt. The SecureGuard clip holds the lap portion of the seat belt in place, preventing submarining–when a child slides under the lap belt–and reducing the risk of any abdominal injury.

Superior 360-Degree Protection Features
For even greater support, the Parkway SG offers an energy-absorbing EPS foam liner that provides additional cushioning. It’s also designed with high-density comfort foam made with soft, padded materials that support your child’s body to promote correct alignment in the booster seat and greatly enhance safety. These features make for a comfortable ride, even during long car trips.

Easy-to-Use and Adaptable to Your Growing Child
The simple, color-coded vehicle safety belt guides indicate the path and position of the vehicle safety belt, helping you properly secure your child in the Parkway SG every time. As your child grows, the head restraint adjusts easily for a comfortable, custom fit, while the removable back allows you to convert to a backless booster while keeping all of the safety features of the SecureGuard system.

Fits Three Across with Convenient Accessories
Ideal for larger families, owners of smaller cars, or caregivers of multiple children, the Parkway SG features a narrow footprint that allows you to fit three seats across in the back seat. The comfortable armrests and retractable, dual cup-holders provide extra touches that offer greater comfort to your child.

Soft, Durable Materials and Easy to Clean
Made from soft, durable materials, the booster seat’s cover is easy to remove from the shell for cleaning and is available in a selection of subtle patterns, including Matrix, Onyx, Sesame, and Pink Sky.

The Britax Parkway SG Booster Seat is backed by a limited one-year warranty.

What’s in the Box
One Britax Parkway SG Booster Seat and manual.

Parkway SG Booster Seat


  • Booster child height and weight: 38″ – 63″, approximately 40 – 120 pounds
  • Seated shoulder height with backrest: 21″
  • True side impact protection distributes crash forces, shields from vehicle intrusion,keeps the head, neck and spine aligned
  • Secure Guard works with the vehicle safety belt to prevent the child from sliding under the lap-belt
  • Higher forward-facing booster seat capacity allows older children to remain in a belt positioning booster to 120 pounds

Britax Parkway Slide Guard Booster Seat, Onyx

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