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Monterey® 4DXT

$259.99 - $319.99
Monterey® 4DXT original expandable booster [Black]
15 improvements since the first Monterey [Black]
4 layers of side impact protection [Black]
Breathable side panels [Black]
69% increase occupancy [Black]
Monterey® high back booster seat [Black]
Converts to backless booster [Black]
Integrated retractable cup holder [Black]
11 headrest positions [Black]
One hand width adjustment [Black]
Fully covered backrest [Black]
UAS connectors [Black]
Ergonomically contoured base [Black]
Re-modelled headrest [Black]
86 cm width by 52.2 cm height / 33.9 in width by 20.7 in height [Black]
Monterey® 4DXT original expandable booster [Blue]
15 improvements since the first Monterey [Blue]
4 layers of side impact protection [Blue]
Breathable side panels [Blue]
69% increase occupancy [Blue]
Monterey® high back booster seat [Blue]
Converts to backless booster [Blue]
Integrated retractable cup holder [Blue]
11 headrest positions [Blue]
One hand width adjustment [Blue]
Fully covered backrest [Blue]
UAS connectors [Blue]
Ergonomically contoured base [Blue]
Re-modelled headrest [Blue]
86 cm width by 52.2 cm height / 33.9 in width by 20.7 in height [Blue]
Monterey® 4DXT original expandable booster [Gray Dark]
15 improvements since the first Monterey [Gray Dark]
4 layers of side impact protection [Gray Dark]
Breathable side panels [Gray Dark]
69% increase occupancy [Gray Dark]
Monterey® high back booster seat [Gray Dark]
Monterey® high back booster seat [Gray Dark]
Integrated retractable cup holder [Gray Dark]
11 headrest positions [Gray Dark]
One hand width adjustment [Gray Dark]
Fully covered backrest [Gray Dark]
UAS connectors [Gray Dark]
Ergonomically contoured base [Gray Dark]
Re-modelled headrest [Gray Dark]
86 cm width by 52.2 cm height / 33.9 in width by 20.7 in height [Gray Dark]
Monterey® 4DXT original expandable booster [Gray Light]
15 improvements since the first Monterey [Gray Light]
4 layers of side impact protection [Gray Light]
Breathable side panels [Gray Light]
69% increase occupancy [Gray Light]
69% increse occupancy [Gray Light]
Converts to backless booster [Gray Light]
Integrated retractable cup holder [Gray Light]
11 headrest positions [Gray Light]
11 headrest positions [Gray Light]
Fully covered backrest [Gray Light]
UAS connectors [Gray Light[
Ergonomically contoured base [Gray Light]
Re-modelled headrest [Gray Light]
86 cm width by 52.2 cm height / 33.9 in width by 20.7 in height [Gray Light]
Monterey® 4DXT original expandable booster [Plum]
15 improvements since the first Monterey [Plum]
4 layers of side impact protection [Plum]
Breathable side panels [Plum]
69% increase occupancy [Plum]
Monterey® high back booster seat [Plum]
Converts to backless booster [Plum]
Integrated retractable cup holder [Plum]
11 headrest positions [Plum]
One hand width adjustment [Plum]
Fully covered backrest [Plum]
UAS connectors [Plum]
Ergonomically contoured base [Plum]
Re-modelled head rest [Plum]
86 cm width by 52.2 cm height / 33.9 in width by 20.7 in height [Plum]
Monterey® 4DXT original expandable booster [Yellow Sulphur]
Monterey® 4DXT original expandable booster [Yellow Sulphur]
4 layers of side impact protection [Yellow Sulphur]
Breathable side panels [Yellow Sulphur]
69% increase occupancy [Yellow Sulphur]
Monterey® high back booster seat [Yellow Sulphur]
Converts to backless booster [Yellow Sulphur]
Integrated retractable cup holder [Yellow Sulphur]
11 headrest positions [Yellow Sulphur]
One hand width adjustment [Yellow Sulphur]
Fully covered backrest [Yellow Sulphur]
UAS connectors [Yellow Sulphur]
Ergonomically contoured base [Yellow Sulphur]
Ergonomically contoured base [Yellow Sulphur]
86 cm width by 52.2 cm height / 33.9 in width by 20.7 in height [Yellow Sulphur]
Monterey® 4DXT original expandable booster [Red]
15 improvements since the first Monterey [Red]
4 layers of side impact protection [Red]
Breathable side panels [Red]
69% increase occupancy [Red]
Monterey® high back booster seat [Red]
Converts to backless booster [Red]
Integrated retractable cup holder [Red]
11 headrest positions [Red]
One hand width adjustment [Red]
Fully covered backrest [Red]
UAS connectors [Red]
Ergonomically contoured base [Red]
Re-modelled headrest [Red]
86 cm width by 52.2 cm height / 33.9 in width by 20.7 in height [Red]
Monterey® 4DXT original expandable booster [Black]

The original expandable booster has evolved


$259.99 - $319.99
OR

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Additional 2-Year Warranty

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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 18 - 54 kg / 40 - 120 lb or approx. 4 – 12 years.

Features:

  • 15 UPGRADES FROM MONTEREY® XT - Includes automotive inspired fabrics that cover the entire booster seat back and breathable side panels to enhance airflow to keep your child cool on the move.
  • 4 LAYER SIDE IMPACT PROTECTION - Extra deep aluminum reinforced sides provides 4 layers of enhanced side impact protection for their head, shoulders and torso.
  • EXPANDABLE HEIGHT & WIDTH - 11 headrest positions and expandable side walls provides 69% increase in occupancy space as your child grows.
  • TWO SEATS IN ONE - Easily converts from a high back booster to a backless booster seat with wide contoured seat base and two retractable cup holders.
  • QUICK & SECURE INSTALLATION - Equipped with UAS (LATCH) connectors and front adjusters to securely connect the booster seat to your vehicle in seconds, enhancing safety and stability.

Product Specs

  • Minimum User Weight: 18 kg / 40 lb
  • Maximum User Weight: 54 kg / 120 lb
  • Product Height: 69 cm / 27.2 in
  • Product Width: 54 cm / 21.3 in
  • Product Depth: 41 cm / 16.1 in
  • Seat Weight: 8.48 kg / 18.7 lb

Care & Maintenance

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

Warranty Information

12 months standard warranty

The Diono Difference

All Diono boosters are designed and engineered to go over and above safety standards.
One thing all parents know, kids will keep on growing! Diono boosters are suitable from 18 - 54 kg (approx. 4 - 12 years) for 8 years of use.
The Diono Monterey® is the original expandable booster seat, engineered with both height and width adjustment for a custom fit at every age.
Integrated LATCH connectors and front adjusters make for a simple and safe installation every time.

Plays well with

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