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Diono Monterey 5iST FixSafe High Back Booster Car Seat with Expandable Height and Width, Compact Fold to Full Size Booster, Foldable, Portable Booster for Go-Anywhere Travel, Black Jet

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59 ratings

| 9 answered questions

$269.99

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Color: Black Jet

Black Jet

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Brand	Diono
Installation Type	Seat Belt
Material	Alloy Steel, Polypropylene, Plastic, Polystyrene
Color	Black Jet
Orientation	Forward Facing

About this item

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

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All Product Information Customer Q&A's Customer Reviews

From the manufacturer

8 Years One Booster

Providing 85% increase in occupancy to grow with your child for up to 8 years
Safe+ Side Impact Protection

Safe+ 8-layer side impact protection using interlocking EPS & EPP foam, high-density plastic, and steel reinforcement
Easy Installation

Adjustable rigid latch FixSafe easy installation for a secure fit
3 Ways To Carry

Compact and portable folding design with 3 ways to carry. Includes carry handle and straps
Cup Holder

Large removable cup holder can be inserted on either side of the seat for drinks and snacks
Easy Buckle Up

Open design with secure belt guides for an easy buckle and proper seatbelt routing

Monterey 5iST FixSafe

269.99 US Dollars	MRSP	199.99 US Dollars
FF: 40-120	Weight Limits (lbs)	FF: 40-120
	Expands (H&W)
	Adjustable Headrest
	Converts to backless
	Compact Fold

269.99 US Dollars	MRSP	159.99 US Dollars
FF: 40-120	Weight Limits (lbs)	FF: 40-120
	Expands (H&W)
	Adjustable Headrest
	Converts to backless
	Compact Fold

Monterey 4DXT
Monterey XT

Product Description

Introducing the next generation of expandable booster. Designed for ultimate portability, Monterey® 5iST FixSafe™ 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.

Product information

Technical Details

Product Dimensions

‎15 x 17 x 24.8 inches

Item model number

‎15700

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

Care instructions

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

Additional product features

‎Transforms in seconds from a compact fold to a full-size booster seat, without compromising safety or comfort

Number Of Items

‎1

Number of reclining positions

‎12

Batteries required

‎No

Orientation

‎Forward Facing

Forward-facing minimum child weight

‎40 Pounds

Forward-facing maximum child weight

‎120 Pounds

Harness type

‎3-Point

Is portable

‎Yes

Item Weight

‎18.7 pounds

Additional Information

ASIN

B0929L3HV6

Customer Reviews

59 ratings

4.5 out of 5 stars

Best Sellers Rank

#31,372 in Baby (See Top 100 in Baby)
#87 in Child Safety Booster Car Seats

Warranty & Support

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Compare with similar items

		Diono Monterey 4DXT Latch, 2-in-1 High Back Booster Car Seat with Expandable Height, Width, Advanced Side Impact Protection, 8 Years 1 Booster, Red	UPPAbaby ALTA Booster Seat, Morgan (Charcoal Melange)	Diono Monterey XT Latch 2 in 1 High Back Booster Car Seat with Expandable Height & Width, Side Impact Protection, 8 Years 1 Booster, Black	Peg Perego Viaggio Shuttle Plus 120 - Booster Car Seat - for Children from 40 to 120 lbs - Made in Italy - Licorice (Black)	Maxi-Cosi Rodi Sport Booster Car Seat, Midnight Black

Customer Rating	(59)	(225)	(265)	(1726)	(47)	(126)
Price	$269.99	$199.99	$179.99	$149.98	$239.99	$179.99
Sold By	GOMINIGO / GMG Motorsports	Amazon.com	Amazon.com	GOMINIGO / GMG Motorsports	Amazon.com	Amazon.com
Brand Name	Diono	Diono	UPPAbaby	Diono	Peg Perego	Maxi-Cosi
Color	Black Jet	Red	charcoal melange	Black	Licorice	Midnight Black
Item Dimensions	15 x 17 x 24.8 inches	16.1 x 20.5 x 27.2 inches	20 x 19 x 33 inches	17.5 x 22 x 27.2 inches	17 x 17 x 26.75 inches	—
Size	15x17.9x24.8 Inch (Pack of 1)	1 Count (Pack of 1)	1 Count (Pack of 1)	16.1x19.9x27.2 Inch (Pack of 1)	17x17x26.75 Inch (Pack of 1)	1 Count (Pack of 1)

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Customer Questions & Answers

See questions and answers

Customer reviews

5 star		78%
4 star		10%
3 star		5%
2 star		4%
1 star		4%

How customer reviews and ratings work

Top reviews from the United States

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sleebs

Works for recessed buckles!

Reviewed in the United States on June 11, 2021

Color: Black JetVerified Purchase

We have been a family of frustrated people ever since our oldest transitioned to a highback booster because our car (Model 3) has absolutely atrocious design when it comes to accommodating car seats: the rear inboard seatbelt buckles are deeply flush/recessed and have no give. We were using a Graco Tranzitions as a high back booster before (a great seat in any other car and one of the narrower more affordable ones at that), it was still just barely too wide to buckle easily. The Monterey 5 iST is not only narrow, but it has ISOFIX. The cutaway allows for easy access to the buckle so my kid can do it himself without struggle. I am pretty sure some savvy engineers have lived through the hell of the Model 3 and designed this seat with it in mind. THANK YOU

14 people found this helpful

Helpful

Good option for travel, save your $$ if just daily use

Reviewed in the United States on August 18, 2021

Color: Red CherryVerified Purchase

We chose this model for the compact fold/straps because we were planning plane travel with driving on the other end for our 5yo who is not mature enough for a bottom seat only booster for any significant distance.

The fold is great and compact. The provided straps are just webbing, and There was no way we’d use them for more than a minute. I found some clip on backpack straps on Amazon that were more comfortable, but it sits at an awkward angle. You’re better off using some bungee cords to strap it to the handle of rolling luggage if you’re going very far.

We gate checked it for our flights but you may be able to put it in an overhead bin.

Since the back does not detach, it’s easy to quickly install and remove from an Uber. I had trouble getting the isofix latch connectors to work in one Uber (Toyota sienna, I believe) but it was a short ride so we went without them completely attached.

We also like that the sides of this seat expand like the other Monterey models because my son is tall with a long and wide torso and would likely have cramped shoulders by the time he ages out of a standard booster seat. What I didn’t realize until we got it is that the width expands as you raise the headrest, not independently like the other models.

Overall we like it but unless you’re planning some travel that includes Ubers and/or flights where you’ll rent a car or ride with family/friends on the other end, save your $$. We have the $100 XT model in our other car and it functions just as well if you’re installing it once and leaving it there (and it still has the expandable back panel). If your child is average height/weight/build, you can pick something even cheaper.

5 people found this helpful

Helpful

Kelly

Easiest install ever

Reviewed in the United States on October 15, 2021

Color: Blue SkyVerified Purchase

This booster is not only nice to look at but it's comfortable. The seat doesn't have as much padding on the bootie as our old seat but he doesn't mind. The fixsafe latch system was a bit hard to get to pop out at first , I had to really push the button extremely hard to get them to come out. But then the install was a breeze. So easy. The chair itself is quite light which makes it convenient to put in other cars if necessary, it folds completely into itself and makes for very easy travel. It could easily fit in an overhead compartment on an airplane and it comes with straps to wear it on your back as a " back pack ". The cup holder is bigger to accommodate bigger cups and it's easy for my son to put the belt on himself. Overall I'm really happy w my choice. We are a diono family and when my old one was compromised from an accident it was a no brainer I was getting another Diono. We upgraded from a Rainier to the Monterey since my son is getting bigger and taller this seat accommodates up to 63 inches and 120 lbs. So he can be in it longer. Which was a big appealing factor in the decision.

One person found this helpful

Helpful

Dave

Want to love it, but.......RATTLES LIKE CRAZY

Reviewed in the United States on May 16, 2022

Color: Gray SlateVerified Purchase

I wanted to love this car seat, but over rough roads the car seat rattles like crazy. Note, this is only when a child "isn't" sitting in the car seat. The base isn't solid, as is comprised of a series of plastic parts that move and adjust. These plastic parts over rough roads create a ton of unsavory sounds and additional NVH. If you are someone who drives around in a relatively quiet car, this car seat will drive you nuts.

The look/design is amazing. I give it one star, because I feel they never tested the seat in a real world, day to day scenario. This seat would be 5-stars if the base was solid and eliminated the plastic on plastic additional NVH the seat creates. Diono is from Seattle! I wish they tested this on Seattle roads.

I never leave bad reviews, but am doing this, because I truly think this product has so much potential and hope this gets relayed to their design team.

Helpful

Latch is flimsy

Reviewed in the United States on August 7, 2021

Color: Blue SkyVerified Purchase

I purchased this seat thinking hard latch was a solid connection preventing the seat from leaning to the sides (the purpose of hard latch in the first place). This one moves more than the strapped seat. Good idea poor execution. Cheap looking and feel in person. Had to buy another one Nuna aace to get what was originally intended.

One person found this helpful

Helpful

mina irandoust

👍

Reviewed in the United States on November 19, 2021

Color: Blue SkyVerified Purchase

👍

One person found this helpful

Helpful

Vincent

Great for growing kids

Reviewed in the United States on March 5, 2022

Color: Purple PlumVerified Purchase

I bought another one for my 5 year old and he loves it and we love that it is safe

Helpful

Nayeli

Easy to install, ready to use right out of the box. Does not have enough cushion.

Reviewed in the United States on July 14, 2021

Color: Blue SkyVerified Purchase

Easy to install, nice looking , son liked color and chair . Complained leg burgers during long ride, he had never said anything before. But he likes the car seat. Compact and comes with cup holder. Needs more cushion/padding the chair is hard

3 people found this helpful

Helpful

Top reviews from other countries

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Mr. Dilbert

It looks good on the photos posted but in real life this is a very cheap, made in China product.

Reviewed in Canada on July 3, 2021

Color: Red CherryVerified Purchase

The use of photo renderings to embellish a cheap looking product is a waste of time for all. I ended up buying the Peg Perego Viaggio Flex 120 licorice for safety, comfort, quality and style.

One person found this helpful

Alex A

Parfait

Reviewed in Canada on July 5, 2021

Color: Black JetVerified Purchase

Qualité excellente.

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3 Year Baby Protection Plan

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Other Sellers on Amazon

Diono Monterey 5iST FixSafe High Back Booster Car Seat with Expandable Height and Width, Compact Fold to Full Size Booster, Foldable, Portable Booster for Go-Anywhere Travel, Black Jet

Enhance your purchase

About this item

Buy it with

More to consider from our brands

Have a question?

From the manufacturer

8 Years One Booster

Safe+ Side Impact Protection

Easy Installation

3 Ways To Carry

Cup Holder

Easy Buckle Up

269.99 US Dollars

MRSP

199.99 US Dollars

FF: 40-120

Weight Limits (lbs)

FF: 40-120

Expands (H&W)

Adjustable Headrest

Converts to backless

Compact Fold

269.99 US Dollars

MRSP

159.99 US Dollars

FF: 40-120

Weight Limits (lbs)

FF: 40-120

Expands (H&W)

Adjustable Headrest

Converts to backless

Compact Fold

Product Description

Product information

Technical Details

Additional Information

Warranty & Support

Feedback

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Customer reviews

Top reviews from the United States

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