Monterey 2XT High Back Booster

Retail Price
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The original Diono 2-in-1 booster seat features their one-of-a-kind, easy-adjust, separate height and width expansion. Suitable from 40 – 120 lb (approx. 4 – 12 years).

  • Lightweight and portable
  • 11-position headrest
  • Award-Winning side impact safety
  • Safe+ Belt Guides
  • Backless booster option
  • 2x fold-away s cup holders and snack trays

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8yrs – One Booster

Suitable for your big kid, from 40 – 120 lbs, the Monterey 2XT is the only booster you’ll ever need.

Award-Winning Safety

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

SafePlus Belt Guides

The Monterey 2XT provides easy access to the seatbelt buckle, helping your big kid with self-buckling—don’t forget to check, though!

Pick Any Side

With two built-in, retractable, 2-in-1 cup holders and snack trays, The Monterey 2XT keeps your big kid’s drink close at hand and stows away their essentials.

Lightweight and Easy Install

Weighing less than 15 lbs, the Monterey 2XT provides easy, quick, and secure installation. The LATCH connectors and 2 easy-adjust LATCH straps allow you to quickly tighten and secure your booster to your vehicle.

Go Backless

The Monterey 2XT easily converts into a backless booster seat, ensuring a proper fit for your little one at every age.

Product Specs

Available Colors

Monterey Black

Product Weight 14.3 lbs.
Product Dimensions 17.5 x 22 x 27.2 inches

Additional Info

Minimum User Weight 40 lbs
Maximum User Weight 120 lbs
Maximum User Height 63 inches
Head Support Positions 11
Cup Holder Yes
Use and Care ‎Covers: Machine wash cold and line dry. Shell and Components: Spot clean
Warranty 12 months standard warranty - extended to 36 months when you register with Diono® post purchase
  • What comes in the box?

    Monterey® 2XT Booster, Instruction Manual, Cup Holder

  • Diono booster seats can be used for children weighing 40-120 lbs. and are 38-63 in. tall. Typically once a child reaches 5 years of age they are mature enough to ride in a booster seat.

  • Our booster seats fit 2 across in most cars. Each vehicle model is different and allows for various seating positions. Consumers should consult vehicle owners manual for appropriate car seat placement in their car that may fit more than 2 across.

  • The Monterey® 2XT Latch is recommended to be installed with the lower anchors if you vehicle is equipped with them. However, it can be used without.

  • Diono booster seats are not meant to be used on airplane. Boosters require a lap/shoulder belt and airplanes only have a lap belt.

  • Please consult the seat manual. Diono Cambria and 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.

  • All Diono booster seats have a life span of 8 years, starting from the date you purchase your seat. In the event the date of purchase cannot be determined then we use the date of manufacture.