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Diono Monterey 2XT

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The upgraded original 2-in-1 expandable booster by Diono

Welcome a world of flexibility with Monterey 2XT.

Suitable from 18 – 54 kg, 97 – 160 cm tall and approx. 4 – 12 years. We all know that children grow at different rates, and not one size fits all. As one of the most flexible car seats you’ll find, Monterey 2XT is lightweight, super portable and with adjustable headrest and expandable sides, ensures a proper fit for your little one at every age.

Featuring 11 headrest positions and 2 recline positions, Monterey 2XT can adapt quickly to growing children, with plenty of room for shoulders, hips and legs. A simple-to-use dial on the back adjusts the width of the seat up to 20”/50.8 cm wide, while the headrest adjusts up to 6.5”/16.5 cm in height with one hand for an easy precise fit.

Clever design thinking and award-winning safety features make the Diono difference. That’s why the Monterey 2XT includes our superior side impact protection with aluminum reinforced head support and energy absorbing EPS foam, to accommodate growth spurts without sacrificing protection.

Equipped with simple connectors and front adjusters, Monterey 2XT can securely connect to your vehicle in seconds, enhancing safety and stability as well as allowing parents to switch between vehicles with ease.

Lovingly engineered for every journey with two retractable cup holders to keep drinks or snacks upright and within reach, so both children and parents can sit back and relax.

  • THE ORIGINAL EXPANDABLE BOOSTER. 11 headrest positions and expandable side walls provides 69% increase in occupancy space as your child grows.
  • 2-in-1. Easily converts from a high back booster to a backless belt positioning booster seat with wide contoured seat base and two retractable cup holders.
  • SIDE IMPACT PROTECTION Extra deep aluminum reinforced sides provides side impact protection for their head, shoulders and torso.
  • QUICK & SECURE INSTALLATION. Equipped with LATCH connectors and front adjusters to securely connect the booster seat to your vehicle in seconds, enhancing safety and stability.
  • SUPER LIGHTWEIGHT. Weighing only 15.2 lb (6.9 kg) the Monterey XT booster seat is super light allowing you to move the seat between vehicles with ease.
  • Maximum User Height: 63 in / 160 cm
  • Number of Head Support Positions: 11
  • Minimum User Weight: 40 lb / 18 kg
  • Maximum User Weight: 120 lb / 54 kg
  • Minimum User Weight – Forward Facing: 40 lb / 18 kg
  • Maximum User Weight – Forward Facing: 120 lb / 54 kg
  • Product Height: 27.2 in / 69 cm
  • Product Width: 22 in / 55.9 cm
  • Product Depth: 17.5 in / 44.5 cm
  • Seat Weight: 14.3 lb / 6.5 kg
  • 12 months standard warranty
  • Care & Maintenance: Covers: Front loader only, gentle cycle machine wash cold, line dry. Shell and Components: Spot clean.
Product Weight

6.9 kg

Product Depth

44.5 cm

Product Width

55.9 cm

Product Height

69 cm


Yes (Latch)

Seat Belt System

3 point seat belt or lap belt. Ok to use with over lapping seat belts, check that the lower anchor belt or seat belt must not rub on each other or interfere with each other when installing the seat.

Forward Facing


Side-Impact Protection


Energy-Absorbent Foam


Washable Covers

Front loader only, gentle cycle machine wash cold, line dry.

Age Range

Approx 4 – 12 years

Height Range

97 – 160 cm (standing height)

Weight Range

18 – 54 kg

Manufacture Warranty

1 year

New Zealand Standard 'S' mark


Expiry Date

8 years from date of purchase if customer has the original receipt. If not, it reverts to 8 years from date of manufacture.



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  • Does this product support Isofix?

    Hi there, yes it does

    Question by : azeemigi on Feb 29, 2024 11:41:25 AM
  • Can this seat be used with the inflatable seatbelts in the later model Ford Mondeo?

    Hi Bianca, please consult the seat manual. Diono Monterey seats manufactured prior to 2017 can be used with Ford's inflatable seat belts. Newer models will not allow them to be used and will be stated in the car seat's manual. If you are unsure though, feel free to go to your local Baby On The Move store and get it fitted. Here are a list of our store locations here: Hope that helps

    Question by : Bianca on May 20, 2024 12:27:53 PM

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