null
Skip to main content
Cart 0
Your Bag
  1. Home
  2. Car Seats
  3. Monterey® XT

Monterey® XT

$119.99
Monterey® XT Expandable Booster Seat [Yellow Sulphur]
69% increase in occupancy space [Yellow Sulphur]
Side Impact Protection [Yellow Sulphur]
11 headrest positions [Yellow Sulphur]
Super lightweight design [Yellow Sulphur]
Total child comfort [Yellow Sulphur]
Simple installation every time [Yellow Sulphur]
Designed for 8 years use [Yellow Sulphur]
Designed for 8 years use [Yellow Sulphur]
Monterey® XT high back booster seat [Yellow Sulphur]
Monterey® XT Expandable Booster Seat [Black]
69% increase in occupancy space [Black]
Side Impact Protection [Black]
11 headrest positions [Black]
Super lightweight design [Black]
Total child comfort [Black]
Simple installation every time [Black]
Designed for 8 years use [Black]
Designed for 8 years use [Black]
Monterey® XT high back booster seat [Black]
Monterey® XT Expandable Booster Seat [Blue]
69% increase in occupancy space [Blue]
Side Impact Protection [Blue]
11 headrest positions [Blue]
Super lightweight design [Blue]
Total child comfort [Blue]
Simple installation every time [Blue]
Designed for 8 years use [Blue]
Designed for 8 years use [Blue]
Monterey® XT high back booster seat [Blue]
Monterey® XT Expandable Booster Seat [Dark Gray]
69% increase in occupancy space [Dark Gray]
Side Impact Protection [Dark Gray]
11 headrest positions [Dark Gray]
Super lightweight design [Dark Gray]
Total child comfort [Dark Gray]
Simple installation every time [Dark Gray]
Designed for 8 years use [Dark Gray]
Designed for 8 years use [Dark Gray]
Monterey® XT high back booster seat [Dark Gray]
Monterey® XT Expandable Booster Seat [Gray Oyster]
69% increase in occupancy space [Gray Oyster]
Side Impact Protection [Gray Oyster]
11 headrest positions [Gray Oyster]
Super lightweight design [Gray Oyster]
Total child comfort [Gray Oyster]
Simple installation every time [Gray Oyster]
Designed for 8 years use [Gray Oyster]
Designed for 8 years use [Gray Oyster]
Monterey® XT high back booster seat [Gray Oyster]
Monterey® XT Expandable Booster Seat [Plum]
69% increase in occupancy space [Plum]
Side Impact Protection [Plum]
11 headrest positions [Plum]
Super lightweight design [Plum]
Total child comfort [Plum]
Simple installation every time [Plum]
Designed for 8 years use [Plum]
Designed for 8 years use [Plum]
Monterey® XT high back booster seat [Plum]
Monterey® XT Expandable Booster Seat [Red]
69% increase in occupancy space [Red]
Side Impact Protection [Red]
11 headrest positions [Red]
Super lightweight design [Red]
Total child comfort [Red]
Simple installation every time [Red]
Designed for 8 years use [Red]
Designed for 8 years use [Red]
Monterey® XT high back booster seat [Red]
Monterey® XT high back booster seat [Gray Dark]
Monterey® XT Expandable Booster Seat [Yellow Sulphur]

The original 2-in-1 expandable booster


$119.99
Klarna
or 4 interest-free payments of $30.00. Learn More
OR

Enjoy worry-free buying and perks with the Diono Difference

Recieve perks when you shop on diono.com

Additional 2-Year Warranty

Receive an additional 2-year warranty on all car seats and strollers purchased from diono.com

Free Shipping on orders over $300*

Diono proudly offers free shipping on orders over $300

Unlock exclusive offers & discounts

Unlock exclusive news, offers and discounts on all diono.com products.

1-2-1 Virtual Car Seat Fitting

Book a 1-2-1 virtual car seat fitting with a member of our car seat safety team.

* T & C's apply

Monterey® XT

The original expandable booster, with easy one hand height and width adjustment to provide 69% increase in occupancy space. Suitable from 40 - 120 lb. (18 - 54 kg), approx. 4 - 12 years.

Features:

  • THE ORIGINAL EXPANDABLE BOOSTER SEAT - 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 13 lb. (5.8 kg) the Monterey XT booster seat is super light allowing you to move the seat between vehicles with ease.

Product Specs

  • 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 Width: 20 in / 50.8 cm
  • Product Height: 26 in / 66 cm
  • Product Depth: 16 in / 40.6 cm
  • Seat Weight: 13.9 lb / 6.3 kg

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

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 40 - 120 lb (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

Diono Travel Pal Back Seat Car Organizer, Perfect For Kids Toys, Books, Drinks, With Dividable Storage, Reinforced Carry Handles, Collapsible Car Storage Organizer, Folds Flat [Black]
Out of stock

Travel Pal®

$18.99

The ultimate in-car organizer with 8 multi-use pockets

Customers Also loved

Radian® 3QXT All-in-one convertible car seat [Purple Plum]

Radian® 3QXT

$399.99

The ultimate 3 across All-in-One car seat from birth to booster.

Radian® 3R all-in-one convertible car seat [Blue Sky]

Radian® 3R

$199.99

The original 3 across All-in-One convertible car seat

Radian® 3QX all-in-one convertible car seat [Blue Sky]

Radian® 3QX

$369.99

The advanced 3 across All-in-One car seat from birth to booster.

Angle Adjuster Car Seat Leveler, Car Seat Wedge Cushion, Provides More Legroom For Rear-Facing Car Seats [Black]

Angle Adjuster

$19.99

Elevates All-in-One convertible car seats to a more upright position

Reviews