Monterey 5 iST FixSafe Booster Car Seat

by Diono



Designed for ultimate portability, the Diono 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 the Diono Monterey 5iST FixSafe you can always take safety with you for the joy of the journey.


  • Fold N' Grow: Innovative folding booster with unique auto lock so you can grab and go!
  • Safe+ Secure Belt Guides: Open design and armrests removed to create a low belt path guide to help eliminates misuse
  • Safe+ Secure Belt Lock: Intuitive shoulder belt hooks to help safe belt routing and avoid misuse.
  • Safe+ Energy Adsorbing Shell to shield and protect
  • Safe+ Airflow Technology for optimum child comfort
  • Super compact when folded; 25% smaller than the average booster.
  • FixSafe Connections adjustable easy click isofix [rigid LATCH] connectors make for safe, simple and convenient installation every time.
  • Super lightweight so you can simply fold & go
  • 12-position head support and expanding sides grows with your child.
  • Multiple seat adjustment options with one hand.
  • Ergonomically designed for child comfort with contoured seat back and base 
  • Allows you to carry two ways - either with carry strap or integrated handle
  • Includes a cup holder 


  • Recommended Age: 40 - 120 lbs or up to 63" tall.
  • Booster weighs 13 lbs 
  • Material: 925 polyester and 8% spandex and filled with 100% polyurethane foam.

Care Instructions:

  • Machine wash fabrics.
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