SKU: 83895471839

Monterey® 5iST FixSafe™ Rigid Latch High Back Booster Car Seat

Sale price$179.99 Regular price$199.99
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Ships within 48 hours · Estimated delivery Aug 19 - Aug 24

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Description

Monterey® 5iST FixSafe™ Rigid Latch High Back Booster Car SeatMonterey 5iST FixSafe Rigid Latch High Back Booster Car Seat Description Unbox, unfold, install, adjust and go all in 2 minutes or less. One of a kind compact folding booster with SafePlus easy adjust backrest and headrest. 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%

Monterey® 5iST FixSafe™ Rigid Latch High Back Booster Car Seat

 

Description

Unbox, unfold, install, adjust and go all in 2 minutes or less. One of a kind compact folding booster with SafePlus® easy-adjust backrest and headrest.

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 designated storage compartment.

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 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 SafePlus™ 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 SafePlus™ side impact protection features 8 layers of interlocking EPS and EPP foam and includes the SafePlus™ energy absorbing shell, to shield and protect with SafePlus™ airflow technology built in for optimum child comfort. The open design features easy to use SafePlus™ secure belt guides to eliminate misuse and SafePlus™ 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.

Features
  • 8 Years One Booster - for your big kid from 40 - 120 lb. It's all you will ever need
  • One-hand easy-adjust - SafePlus®
  • 12-position headrest and backrest that grows up with your child.
  • Engineered for safety and comfort with 8 layers of Side Impact Protection.
  • Built for comfort for every size - our backrest has deep padded cushioning.
  • One built-in removable cup holder - keeps your big kid's drink close at hand.
  • Our contoured premium soft fabrics - with layered foam padding that provide comfort and support can be easily removed for machine washing.
  • SafePlus® belt guides - easy access to seatbelt buckle help your big kid with self buckling -- don't forget to check though!
  • Unbox, unfold, install, adjust and go - all in 2 minutes or less. Thanks to the SafePlus rigid LATCH connectors, all at a push of a button.
  • Easy to move between cars, or to store at a push of the quick release latch button
  • Engineered with our most side impact protection - our rigid shell is reinforced with 8 layers of high-impact aluminum and EPS energy absorbing foam, to protect the head, shoulders, and torso.
  • Folds to the size of a carry-on bag - great for storage in the trunk or at home. Perfect for trips by plane when you need a boost for your big kid.


Specifications
  • Product Height (in): 24.8
  • Product Width (in): 17.0
  • Product Depth (in): 15.0
  • Product Height - Folded (in): 23.4
  • Product Width - Folded (in): 17.9
  • Product Depth - Folded (in): 7.5
Videos

Instillation

 

Product overview 

FAQ

Monterey® 5iST FixSafe™ Booster, Instruction Manual, Cup Holder, Carry Strap x2

Diono booster seats can be used for children weighing 40-120 lbs. (18-54 kg) and are 38-63 in. (96.5-160 cm) tall. Typically once a child reaches 5 years of age they are mature enough to ride in a booster seat.

Our booster seats fit 2 across in most cars. Each vehicle model is different and allows for various seating positions. Consumers should consult vehicle owners manual for appropriate car seat placement in their car that may fit more than 2 across.

Solana® comes with fabric cup holders in the cover. Solana® 2, Cambria® 2, Monterey® XT, Monterey® 2XT, and Monterey® 4DXT come with two retractable cup holders. The Monterey® 5iST FixSafe™ includes a Radian® cupholder with easy snap in installation.

Press the LATCH release button on the front of the booster. Attach the LATCH connectors to the vehicle’s lower anchors. Confirm the connector’s lock indicator changes from red to green. Push the seat backward until it touches the vehicle seat back.

Yes, it can be used without the LATCH. They will need to use the shoulder seat belt to hold the seat in place when not in use to prevent it from becoming a flying object during a crash or sudden stop.

Locate the straps included with the car seat accessories. Attach the straps to the fabric loops on the back of the seat. Next adjust the straps for comfort before use.

Diono booster seats are not meant to be used on airplane. Boosters require a lap/shoulder belt and airplanes only have a lap belt.

All Diono booster seats have a life span of 8 years, starting from the date you purchase your seat. In the event the date of purchase cannot be determined then we use the date of manufacture.

Press the LATCH release button located on the front of the car seat and pull the car seat away from the vehicle backseat.

Please consult the seat manual. Diono Cambria and Monterey seats manufactured prior to 2017 can be used with Ford's inflatable seat belts. Newer models will not allow them to be used and will be stated in the car seat's manual.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 83895471839

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4.6 ★★★★★
Based on 12 reviews
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Product Reviews
L
Verified Purchase
Lorene
New York, US
★★★★★ 5
King has met his match.
Color: Large - Billy the Beast Monster
I received my dog's toy this evening when I place the toy on the ground my dog King went crazy. He is a one-year-old Pitbull and love to tackle any toy he believes he can't take down, but Mr King has met his match with this toy. He was using all of his bite force to demolish the toy but the toy actually has worn him out. He ran around my yard for about 30 minutes with the toy in his mouth producing the squeaking sound from the toy as well. Hold up the toy is totally filthy with dirt almost covering the entire green and yellow belly of the toy. I have brought king mini toys in the last couple of months and this is the best toy that holds up to his energy level. I tried to retrieve the toy and place it in his dog house because it is far beyond his bedtime, but he wanted to play catch me if You can with my new toy. This is a great toy for those big energetic dogs that love to take their aggression out on maybe some furniture or perhaps that favorite shoe you do not want them to chew on. I am totally sold on this toy I brought from the seller who placed the items on the Amazon site. I plan on purchasing a another toy from the buyer to keep King energy at a low level if I can. I just checked on my dog and he actually has taken the toy with him inside of his dog house and now the toy is snugged under his left paw. I'm one of those smart owners I'm not going to even try to take it from him tonight but hopefully in the next week I can sneak it from him and it may be perhaps wash it. I did this item AA Plus
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 31, 2026
B
Verified Purchase
BBarry
Pawtucket, US
★★★★★ 3
Cute, but not Maligator-proof!
Color: Small - Towering Timmy Monster, Color: Small - Towering Timmy Monster
Fun toy while it lasts. My Belgian Malinois made quick work of this little guy but still enjoys playing with its carcass. Bite Force* but not taking into account the bite force of a Mali-gator!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026
S
Verified Purchase
Steffyt
Draper, US
★★★★★ 5
Puppy Love
Color: Small - the Goofy Monster, Color: Small - the Goofy Monster
Short backstory.... My daughter moved in with her 3 dogs recently and brought her dogs toys. Over the course of the last 3 months, my dogs have managed to steal every last toy they could find. fast forward to purchasing this Blue Monster. It came today and was immediately grabbed by one of my dogs. She refused to give it up even for her favorite ball. Ten minutes later another dog had the baby monster and was not giving it up!!!! (think growling) I thought that I would put the monster up for the night to allow for some sleep but it felt like it had been soaked in slobber ( I am sure I saw it drip ;) ). My dogs seems to think this little blue monster is their one true love. Now for some facts. 1. Baby monster is quite small in comparison to my other Bite Force dog toys. It is not too small for my dogs but it is definitely not a size I would give to my daughters Pit that thinks she is a vacuum. 2. Squeaker lasted about 2 minutes before my dog drool invaded it. Currently no squeaky sounds can be heard...just slightly squishy sounds 3. No holes despite my dogs trying. There has been constant chewing (by Standard Poodles) on this little guy for the last 5 hours and not one little open area. Trust me this is a huge accomplishment. Stuffies last 10 seconds in this house. If you need a toy that will last longer than most I highly recommend Bite Force. The are designed for tough chewers and take a beating
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 11, 2025
B
Verified Purchase
B shops here too much
Birmingham, US
★★★★★ 2
My raptor GSP destroyed this dino toy
Color: Medium - Dilophosaurus, Color: Medium - Dilophosaurus
My dog ripped this toy apart faster than the trex did the lawyer in Jurassic Park. 2 hours! Arm was ripped off, stuffing pulled out methodically over the next to days. Now it is a gutless husk. The metor was kinder to the og dinos than my gsp was to this. Sorry Bite Force. Open to product sampling tho!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
E
Verified Purchase
Edward Williams
Lexington, US
★★★★★ 4
My Hero pup is super happy with it
Color: Large - Billy the Beast Monster
I was super excited to order this and had waited some time to do so. I wanted Big Billy The Beast Monster in large Green, he’s an awesome looking guy. My Golden Retriever was all over me while I was up packaging Him and his tail was in helicopter mode. He was so excited to have it and carried it around the house everywhere we went, he’s laying on me with his head in my lap and Billy’s right next to him. Reason for buying it? Well he loves plushies but there are not many available out there that can stand up to this 80 pound chew monster so I have to keep him on harder stuff, 2 of which are the cheapest toy skull and crosses in orange and blue from a cheap outlet site but he loves them. Orange was first then when we pulled out the blue one he had a aha moment. Now with Billy he was on a whole new level of excitement, I’ve never seen him this excited over a toy, he can’t stop carrying it with him everywhere and showing it off to the other pups I have, there’s no growling or resource guarding but he definitely won’t want to share and that’s of because I always take away any plushies that he gets to because he is serious about chewing. This being made with Kevlar gave me hopes of longevity but he had the ears and the end of 1 hand chewed off in under 2 hours, am I disappointed…yea a little but he has gotten so much joy out of it that it’s made me really happy to have bought it anyway, see he’s my Service Dog so he spends a lot of time being so serious and working that he needs any outlet for spending energy possible and he’s so happy with it that it makes me happy. As I’m writing this he’s asleep with his head in my lap and Billy right next to him looking very tired and happy and that my friends is worth all the beans in the world.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026

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