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

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

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Product details
Official manufacturer description


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. So with Monterey® 5iST FixSafe™ you can always take safety with you for the joy of the journey.


  • Expands in height and width
  • Compact fold to full size booster in seconds
  • FixSafe™ rigid latch connectors
  • 12 headrest positions
  • 8 layers Safe+® side impact protection
Made in
Alloy Steel, Polypropylene, Plastic, Polystyrene
Product dimensions
15 in. D x 17.9 in. W x 24.8 in. H
Product weight
18.7 lbs
Head rest positions
Installation Type
Fixsafe™ Rigid Latch Connector
Set Includes
Cup Holder
TSA Approved
Recommended Age Range
Up to 8 years
Child Minimum Height (Booster)
38 in.
Child Minimum Weight (Booster)
40 lbs
Child Maximum Weight (Booster)
120 lbs
Child Maximum Height (Booster)
63 in.
Diono Monterey® 5iST FixSafe™ Rigid Latch High Back Booster Car Seat
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Top reviews
Would an expert recommend this for your baby?
Gregg Mason
Gregg Mason
Verified baby & toddler expert
Reviewed Aug 8, 2022

With 12 headrest positions this booster seat expands in height as children grow and features immense safety. 40-120 pounds. Has a slick, rigid latch connector that makes it so much easier to instal!