Diono Monterey® XT Booster


Dependable Safety for Growing Children

The Diono Monterey® XT Booster keeps children from 40-120 pounds and up to 63 inches tall safe and secure with aluminum reinforced sides lined with energy absorbing EPS foam. This seat was designed to accommodate growth spurts without sacrificing protection.

Side impact protection

This booster comes with deep, aluminum reinforced sidewalls that provide excellent side impact protection, and the energy absorbing EPS foam surrounds your child for ultimate safety.

Adjustable, supported fit

With 11 headrest positions, this booster adjusts for a proper fit and improved comfort for growing children. A simple-to-use dial on the back adjusts the width of the seat to fit a child’s shoulders up to 20″ wide.

Quick, secure installation

Install the monterey® XT booster securely and in seconds thanks to integrated LATCH connectors and front adjusters. Monterey XT can also be used as a backless booster and packs flat for travel and storage.

Diono knows how to keep back seat snackers happy. This booster comes with retractable cup holders to keep drinks or snacks upright and within reach!

  • Fits children 40 lb to 120 lb and 38" to 63" in height
  • Extra-deep aluminum reinforced sidewalls add side impact protection
  • EPS foam lining for more safety and comfort
  • Adjustable back expands to fit shoulders up to 20 inches wide
  • Adjustable headrest offers 11 positions up to 63 inches tall
  • Easily converts to backless booster
  • LATCH system securely installs in seconds, but LATCH use is not required
  • Angled bottom seat prevents submarining
  • Longer seat bottom for proper leg support with cushioned comfort
  • Retractable cup and snack holders fold out for convenience
  • Flat packing for travel and easy storage
  • Machine wash and dry removable fabric


  • Dimensions: 16" D x 20" W x 26" H
  • Weight: 13.9 lb.


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