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Monterey® 4DXT

$199.99
Monterey® 4DXT Expandable Booster Seat [Yellow]
Monterey® 4DXT Expandable Booster Seat - 2 Seats [Yellow]
Check it fits [Yellow]
With 15 Improvements from previous model [Yellow]
Featuring 4 layers of side impact protection [Yellow]
Advance air flow with breathable side panels [Yellow]
69% increase in seat occupancy [Yellow]
Monterey® 4DXT high back booster [Yellow]
Monterey® 4DXT backless booster [Yellow]
With integrated drinks holder [Yellow]
11 headrest positions [Yellow]
Easy one hand width adjust [Yellow]
Monterey® 4DXT has a fully covered back [Yellow]
LATCH Connectors for quick and easy installation [Yellow]
Total comfort with contoured seat base [Yellow]
Re-modelled headrest [[Yellow]
Monterey® 4DXT Expandable Booster Seat [Black]
Monterey® 4DXT Expandable Booster Seat - 2 Seats [Black]
Check it fits [Black]
With 15 Improvements from previous model [Black]
Featuring 4 layers of side impact protection [Black]
Advance air flow with breathable side panels [Black]
69% increase in seat occupancy [Black]
Monterey® 4DXT high back booster [Black]
Monterey® 4DXT backless booster [Black]
With integrated drinks holder [Black]
11 headrest positions [Black]
Easy one hand width adjust [Black]
Monterey® 4DXT has a fully covered back [Black]
LATCH Connectors for quick and easy installation [Black]
Total comfort with contoured seat base [Black]
Re-modelled headrest [Black]
Monterey® 4DXT Expandable Booster Seat [Blue]
Monterey® 4DXT Expandable Booster Seat - 2 Seats [Blue]
Check it fits [Blue]
With 15 Improvements from previous model [Blue]
Featuring 4 layers of side impact protection [Blue]
Advance air flow with breathable side panels [Blue]
69% increase in seat occupancy [Blue]
Monterey® 4DXT high back booster [Blue]
Monterey® 4DXT backless booster [Blue]
With integrated drinks holder [Blue]
11 headrest positions [Blue]
Easy one hand width adjust [Blue]
Monterey® 4DXT has a fully covered back [Blue]
LATCH Connectors for quick and easy installation [Blue]
Total comfort with contoured seat base [Blue]
Re-modelled headrest [Blue]
Monterey® 4DXT Expandable Booster Seat [Purple]
Monterey® 4DXT Expandable Booster Seat - 2 Seats [Purple]
Check it fits [Purple]
With 15 Improvements from previous model [Purple]
Featuring 4 layers of side impact protection [Purple]
Advance air flow with breathable side panels [Purple]
69% increase in seat occupancy [Purple]
Monterey® 4DXT high back booster [Purple]
Monterey® 4DXT backless booster [Purple]
With integrated drinks holder [Purple]
11 headrest positions [Purple]
Easy one hand width adjust [Purple]
Monterey® 4DXT has a fully covered back [Purple]
LATCH Connectors for quick and easy installation [Purple]
Total comfort with contoured seat base [Purple]
Re-modelled headrest [Purple]
Monterey® 4DXT Expandable Booster Seat [Red]
Monterey® 4DXT Expandable Booster Seat - 2 Seats [Red]
Check it fits [Red]
With 15 Improvements from previous model [Red]
Featuring 4 layers of side impact protection [Red]
Advance air flow with breathable side panels [Red]
69% increase in seat occupancy [Red]
Monterey® 4DXT high back booster [Red]
Monterey® 4DXT backless booster [Red]
With integrated drinks holder [Red]
11 headrest positions [Red]
Easy one hand width adjust [Red]
Monterey® 4DXT has a fully covered back [Red]
LATCH Connectors for quick and easy installation [Red]
Total comfort with contoured seat base [Red]
Re-modelled headrest [Red]
Monterey® 4DXT Expandable Booster Seat [Yellow]

The original expandable booster has evolved


$199.99
Klarna
or 4 interest-free payments of $50.00. Learn More

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Monterey® 4DXT

We’ve taken the award-winning Monterey® booster seat and painstakingly engineered 15 upgrades to create the next generation of booster. Suitable from 40 - 120 lb or approx. 4 – 12 years.

Features:

  • NEXT GENERATION BOOSTER SEAT - 15 safety and style upgrades from the Monterey XT. Ensure protection, comfort and style with the new automotive inspired fabrics that cover the entire vehicle seatback
  • 4 LAYER SIDE IMPACT PROTECTION - Reinforced high impact aluminium that provides 4-layers of enhanced side impact protection for head, shoulders and torso
  • BREATHABLE SIDE PANELS - Designed with breathable exo-shell side panels to enhance airflow and keep your child cool on the move
  • EXPANDABLE HEIGHT & WIDTH - Provides 69% increase in occupancy space as your child grows for a high back booster seat. Providing comfort and safety for your childs car ride
  • 2 SEATS IN 1 - Easily converts into a backless booster seat, with a wide contoured seat base and 2x fold away cup and snack holders

Product Specs

  • Minimum User Weight: 40 lb
  • Maximum User Weight: 120 lb
  • Maximum User Height: 63 in
  • Product Height: 27.2 in
  • Product Width: 20.5 in
  • Product Depth: 16.1 in
  • Seat Weight: 18.3 lb
  • Number of Head Support Positions: 11

Care & Maintenance

Covers: Machine wash cold, line dry. Shell and Components: Spot clean

Warranty Information

12 months standard warranty - extended to 36 months when you register with Diono® post purchase

Diono Monterey® 4DXT 2020- Present Booster - Product information

Monterey® 4DXT Booster, Instruction Manual, Cup Holder

Diono booster seats can be used for children weighing 40-120 lbs. (18-54 kg) and are 38-63 in. (96.5-160 cm) tall. Typically once a child reaches 5 years of age they are mature enough to ride in a booster seat.

Diono high back boosters with a detachable back are the Monterey® 4DXT, Monterey® 2XT, Cambria® 2. All come with a detachable back to convert into a backless 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.

Solana® comes with fabric cup holders in the cover. Solana® 2, Cambria® 2, Monterey® XT, Monterey® 2XT, and Monterey® 4DXT come with two retractable cup holders. The Monterey® 5iST FixSafe™ includes a Radian® cupholder with easy snap in installation.

The Monterey® 4DXT 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.

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.

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.

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