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Today's Deal Diono Monterey 5 Ist Fixsafe Latch Booster Seat Pro Version [uNC37Px2]

$39.99 $127.99 -69%

Introducing the next generation of expandable boosters. Designed for ultimate portability, Today's Deal Diono Monterey 5 Ist Fixsafe Latch Booster Seat Pro Version [uNC37Px2] transforms in seconds from a compact fold to a full-size booster seat, without compromising safety or comfort.

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Today's Deal Diono Monterey 5 Ist Fixsafe Latch Booster Seat Pro Version [uNC37Px2]

Introducing the next generation of expandable boosters. Designed for ultimate portability, Today's Deal Diono Monterey 5 Ist Fixsafe Latch Booster Seat Pro Version [uNC37Px2] transforms in seconds from a compact fold to a full-size booster seat, without compromising safety or comfort. At 25% smaller than the average booster, Monterey® 5iST FixSafe™ folds down into a compact and convenient size and features an integrated carry handle and carry straps with a designated storage compartment, ideal for travel and carpooling.

So, whether you’re on the daily commute, carpooling, storing in the garage, or jumping in a cab, with Monterey 5 you can always take safety with you for the joy of the journey. Suitable from 40 - 120 lb / 18 - 54 kg Monterey® 5iST FixSafe™ expands in height and width to provide up to 85% more room as they grow up to 63” tall. Featuring 12 headrest positions and expands up to 20” in width, Monterey® 5iST FixSafe™ can adapt quickly to growing children, with plenty of room for shoulders, hips, and legs. All of these great features have been combined with Safe+® engineering, with the Monterey® 5iST FixSafe™ subjected to a combination of the most rigorous crash tests; front, rear, and side impacts, and rollover test to ensure the safest seat possible.

The advanced Safe+® side impact protection features 8 layers of interlocking EPS and EPP foam and includes the Safe+® energy absorbing shell, to shield and protect with Safe+® airflow technology built in for optimum child comfort. The open design features easy-to-use Safe+® secure belt guides to eliminate misuse and Safe+® secure belt lock to ensure the adult seatbelt is always routed correctly. The seat base is contoured for child comfort and includes a cup holder for road trip drinks and snacks. Designed with a simple 4-step installation and adjustable rigid latch FixSafe™ connectors, Monterey® 5iST FixSafe™ can be used straight out of the box, with no assembly required. When you’re on the move or need to switch between vehicles, the FixSafe™ connectors offer a simple way to secure the booster to the vehicle latch system, for a safe and convenient installation every time.

Today's Deal Diono Monterey 5 Ist Fixsafe Latch Booster Seat Pro Version [uNC37Px2] Features:

 
  • EXPANDS IN HEIGHT AND WIDTH The Monterey 5 expandable booster seat features easy one-hand automatic height and width adjustment provides 85% more room as your child grows
  • COMPACT FOLD TO FULL SIZE BOOSTER IN SECONDS The lightweight, easy carry Monterey 5 is 25% smaller than the average booster seat without compromising safety or comfort. Included carrying straps with a designated storage compartment, ideal for travel and carpooling
  • FIXSAFE RIGID LATCH CONNECTORS Easy install with FixSafe adjustable rigid latch connectors for a safe and secure installation every time
  • SAFETY + COMFORT Includes 8 layers Safe+ side impact protection and rigorous crash testing to create the most advanced Monterey booster seat ever
  • 8 YEARS ONE BOOSTER 12 headrest positions and expandable sides to grow with your child from 40 - 120 lbs. / 18 - 54 kg (38 - 63” tall / 96 - 160cm). Machine Washable fabric and convenient cup holder ensure your child's booster seat stays clean and comfortable

 

Cushion - Today's Deal Diono Monterey 5 Ist Fixsafe Latch Booster Seat Pro Version [uNC37Px2]

SAFE+ ENGINEERING

Monterey 5iST FixSafe is subjected to a combination of the most rigorous crash tests; front, rear, and side impacts, and a rollover test to ensure the safest seat possible.

Cushion - Today's Deal Diono Monterey 5 Ist Fixsafe Latch Booster Seat Pro Version [uNC37Px2]

SAFE+ SIDE IMPACT PROTECTION

The advanced Safe+ side impact protection features 8 layers of interlocking EPS and EPP foam, plus the Safe+ energy-absorbing shell to shield and protect.

Belt - Today's Deal Diono Monterey 5 Ist Fixsafe Latch Booster Seat Pro Version [uNC37Px2]

SAFE+ SECURE BUCKLE UP

Safe+ secure belt lock keeps the seat belt in place, and the the open lap seat belt routing design gives easy access to the buckle as they learn to buckle themselves.


Dynamite - Today's Deal Diono Monterey 5 Ist Fixsafe Latch Booster Seat Pro Version [uNC37Px2]

FIXSAFE CONNECTORS

Designed with a simple 4 step installation and adjustable rigid latch FixSafe connectors, Monterey 5iST FixSafe can be used straight out of the box

 

Specifications:

Brand Diono 
Product Dimensions ‎15 x 17.9 x 24.8 inches
Minimum weight recommendation 40 Pounds
Maximum weight recommendation ‎120 Pounds
Minimum height recommendation 38.2 Inches
Maximum height recommendation ‎63 Inches
Material Type Alloy Steel, Polypropylene, Plastic, Polystyrene
Material composition ‎100% Polyester
Black Jet Manufacture SKU 15700-NA-01
UPC Black Jet 677726157006
Gray Slate Manufacture SKU 15701-NA-01
UPC Gray Slate 677726157013
Red Cherry Manufacture SKU 15702-NA-01
UPC Red Cherry 677726157020
Blue Sky Manufacture SKU 15703-NA-01
UPC Blue Sky 677726157037
Purple Plum Manufacture SKU 15704-NA-01
UPC Purple Plum 677726157044

 

See Entire Diono Collection

What Our Customers Say

January 16, 2026

Absolutely no complaints!

The product is a very good quality unit.

- Palmer V..

January 16, 2026

Absolutely no complaints!

An exceptionally well-thought-out product.

- Thoughtful_Reviewer.

January 16, 2026

Absolutely no complaints!

It's a very well-made and reliable kit.

- Krew D..

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