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Britax Pioneer 70 Combination Harness-2-Booster Car Seat - Domino Britax Pioneer 70 Combination Harness-2-Booster Car Seat - PeppyParents.com
 - 2 Britax Pioneer 70 Combination Harness-2-Booster Car Seat - PeppyParents.com
 - 3 Britax Pioneer 70 Combination Harness-2-Booster Car Seat - Silverlake Britax Pioneer 70 Combination Harness-2-Booster Car Seat - PeppyParents.com
 - 5 Britax Pioneer 70 Combination Harness-2-Booster Car Seat - PeppyParents.com
 - 6 Britax Pioneer 70 Combination Harness-2-Booster Car Seat - Pacifica
Britax Pioneer 70 Combination Harness-2-Booster Car Seat - Domino
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Britax Pioneer 70 Combination Harness-2-Booster Car Seat - Domino Britax Pioneer 70 Combination Harness-2-Booster Car Seat - PeppyParents.com
 - 2 Britax Pioneer 70 Combination Harness-2-Booster Car Seat - PeppyParents.com
 - 3 Britax Pioneer 70 Combination Harness-2-Booster Car Seat - Silverlake Britax Pioneer 70 Combination Harness-2-Booster Car Seat - PeppyParents.com
 - 5 Britax Pioneer 70 Combination Harness-2-Booster Car Seat - PeppyParents.com
 - 6 Britax Pioneer 70 Combination Harness-2-Booster Car Seat - Pacifica

At-A-Glance Features

The Britax Pioneer 70 Combination Booster Car Seat is a versatile safety seat. Quick glance features:

Lightweight Product    Machine Washable Fabric    Made in the USA    20-second installation    Warranty Information for Baby Gear

2 Seats in 1


Easily switch from a harness booster seat to a traditional booster seat without having to purchase two different car seats as your child grows thanks to the Pioneer 70 Combination Harness-2-Booster seat from Britax. With Britax, you know you are getting the very best in safety thanks to their exclusive SafeCell technology, side impact protection, easy installation, and more.


Britax Pioneer 70 Combination Harness-2-Booster Car Seat Features

  • Superior impact protection
  • Quick and easy harness adjustment
  • Adjustable recline and comfort features
  • Easy and safe installation
  • 2 seating modes
  • Multiple color options available

Superior impact protection

The Pioneer 70 utilizes several advanced impact protection technologies including the exclusive SafeCell impact protection. Britax’s SafeCell is an integrated system of safety components that protect your child in the event of a crash. These systems go well beyond Federal Safety standards and include an impact-absorbing base, two layers of side-impact protection, an impact-stabilizing frame, and a v-shaped tether that minimizes seat rotation. The Pioneer 70 is also aircraft travel-certified, allowing you to travel with your child safely on the ground or in the air.

The Pioneer is proudly manufactured, engineered, and tested in the USA.


Quick and easy harness adjustment

Adjusting the harness on the Pioneer 70 is simple. There is no re-threading required for the 9-position harness. You can adjust the harness with a push of a button as your child grows.


Adjustable recline and comfort features

The Pioneer features front-adjust multi-position recline that will allow your child to ride in comfort in your particular car. The Pioneer, like other Britax car seats, features premium fabrics and comfortable padding, along with a removable cover for ease of cleaning.


Easy and safe installation

Installation is incredibly important when it comes to the safe use of your car seat. Britax has ensured that the Pioneer is simple to install safely. The easy on/off lower connectors lock into your car’s anchors and disconnect swiftly with a push of a button.


2 seating modes

Use the Pioneer as a harness booster seat or as a traditional booster seat when appropriate. Harness mode is safest for small children from 25 lbs up to 70 lbs. When your child is ready, you can switch to a regular booster seat.


Multiple color options available

  • Kiwi
  • Silver cloud
  • Domino
  • Coral
  • Pacifica

Britax Pioneer 70 Combination Harness-2-Booster Seat Specifications

Child Weight (lbs) Forward-Facing Harness: 2 years & 25 lbs, up to 70 lbs.
Belt-Positioning Booster: 40 to 110 lbs.
Child Standing Height (in)

Forward Facing: 30-58"

Booster: 45 - 62"

Child Seated Shoulder Height (in) Forward Facing Harness: 12.5 - 20.5
Booster: 15 - 23
Product Weight (lbs) 21 lbs.
Product Dimensions Harness Minimum Height (in)
19W × 28H × 21D
Product Dimensions Harness Maximum Height (in)
19W x 35H x 21D
Product Dimensions Booster Minimum (in)
19W x 28H x 21D
Product Dimensions Booster Maximum (in)
19W x 35H x 21D
Seating Compartment Height (in)
21.5"
Seat Area Depth / Width (in) 13.5 / 12"
Shoulder Width (in) 15.5"
Harness Slot Heights (in) 12.5 / 13.5 / 14.5 / 15.5 / 16.5 / 17.5 / 18.5 / 19.5 / 20.5"
Buckle Strap Depths (in) 7.0 / 9.0"

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