DIONO Monterey 4DXT Latch Booster Car Seat

Out of stock

Back in 2008, the original American expandable booster seat was created right here at Diono. Fast forward to today as DIONO welcome the next evolution in a long-standing legacy. DIONO have taken the award-winning Monterey and painstakingly engineered 15 upgrades to create the Monterey® 4DXT. From the remodeled headrest, enhanced...
Color :
Grey Dark Wool

Back in 2008, the original American expandable booster seat was created right here at Diono. Fast forward to today as DIONO welcome the next evolution in a long-standing legacy. DIONO have taken the award-winning Monterey and painstakingly engineered 15 upgrades to create the Monterey® 4DXT. From the remodeled headrest, enhanced fabric covering, contoured seat base and breathable exo-shell panels, DIONO have considered every last detail to create a contemporary new look.

The Original Monterey® Booster has Evolved:

Sidewings minimum width - ANB Baby

Lowest Headrest Position:

Sidewings minimum width.

Highest Headrest Position - ANB Baby

Highest Headrest Position:

Sidewings maximum width

Backless Booster Mode - ANB Baby

Backless Booster Mode


DIONO Monterey 4DXT Latch Booster Car Seat Features:


15 Improvements:

DION ha’ve taken all the unique and well-loved features from DIONO award-winning Monterey and introduced 15 upgrades in safety, comfort and style.

15 Improvements - ANB Baby
8 years of adventure - ANB Baby

8 Years of Adventure:

Like all Diono boosters, expect up to 8 years of service, so you can rest assured the Monterey 4DXT will be with you for the long haul.

Adjustable Protection:

The height and width can be adjusted independently for safety that envelopes their head and shoulders up to 12 years of age.

adjustable protection - ANB Baby
total child comfort - ANB Baby

Total Child Comfort:

The ergonomically contoured seat base and remodeled headrest improves the child seating position with luxury AIRTEK foam cushioning for total child comfort.

Product Specifications:

Brand DIONO 
Height  f34.45″/ 87.5cm
Width  24.41″/ 62cm
Depth  17.9″/ 45.5cm
Weight 16.98lbs / 7.7kg
UPC Grey Dark Wool 677726108374


Care and Maintenance:

cover machine washable at 86F/30 C/Cold



can the Monterey® 4DXT fit 3-across?

No, it is too wide to fit 3-across.

how do you install the Monterey 4DXT?

There is no installation required. You may place the booster seat directly on the vehicle seat if there are no LATCH connectors. If there are LATCH connectors, the LATCH system on the booster can be used, but is is not required.

what is the difference between the Monterey 4DXT and the Cambria 2?

The 4DXT comes with an 11 position headrest, expandable seat back, aluminum alloy reinforced sides lined with EPS foam for side impact protection, and a stronger seat back designed for added strength. The Cambria 2 comes with a 6 position headrest and is lined with EPE foam for side impact protection. Both easily convert to a backless booster.

is there a top tether?

No, there is no top tether.

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All returns are subject to a 15% restocking fee. Our policy lasts up to 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.

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