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Product Information

Britax Pioneer Harness-2-Booster Car Seat
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The Britax Pioneer 70 Combination Harness-2-Booster Seat offers premium safety, comfort and convenience for your growing child that is ready to graduate from their convertible car seat. The Pioneer 70 offers a forward-facing five-point harnessed weight capacity of 70 pounds and also converts to a vehicle belt-positioning booster seat that can be used up to 110 pounds.


  • True Side Impact Protection provides deep side walls and a head restraint with energy absorbing EPS foam to distribute crash forces, shield from vehicle intrusion, and contain the head, neck and body while keeping them "in true" or aligned
  • Base with SafeCell Technology designed to keep your child safe and secure in a crash by compressing and significantly lowering the center of gravity, reducing the forward movement of the car seat
  • Integrated Steel Bars strengthen the connection to the vehicle and reduce forward flexing of the child seat during a crash

Manufacturer Recommended Weight/Height:

  • Harnessed Weight: 25 to 70 pounds
  • Harnessed Height (Seated): 12.5 to 18.5 inches
  • Harnessed Height (Standing): 30-54 inches
  • Booster Weight: 40 to 110 pounds
  • Booster Height (Seated): 15-21 inches
  • Booster Height (Standing): 45-59 inches

Product Dimensions/Weight:

  • Harness (Min): 19W × 28H × 21D inches
  • Harnessed (Max): 19W × 34H × 21D inches
  • Booster (Min): 19W × 28H × 21D inches
  • Booster (Max): 19W × 34H × 21D inches

Product Notes

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Britax Pioneer Combination Harness-2-Booster Car Seat - Kiwi - One Size

19 reviews
$184.00 SALE

List: $229.99

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    by PowerReviews

    (based on 2 reviews)

    Reviewed by 2 customers

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    Love it!!!

    By Jess

    from Rhode Island

    About Me Parent of Two or More Children

    Verified Buyer


    • Attractive Design
    • Comfortable


      Best Uses

      • Toddlers

      Awesome for my four year old

      Comment on this review


      Comfortable, Safe

      By CHillMom

      from NC

      About Me Parent of Two or More Children

      See all my reviews

      Verified Buyer


      • Comfortable
      • Sturdy


        Best Uses

        • Toddlers

        Moved our 3 year old into this carseat ahead of a nine day road trip. She was extremely comfortable, and fell asleep often (which never happened in her previous convertible car seat). I was nervous initially about how the booster/head piece had some give/wiggle. After speaking with a Britax rep and being assured it was supposed to do that as it is a separate piece, we kept the seat. Very safe and comfortable.

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