Diono Monterey 4DXT High-Back Booster Car Seat

• Transforms from high-back to backless booster for extended use.
• Easy-adjust 11-position headrest and expandable backrest (up to 6.5 inches).
• 4-layer side impact protection with high-impact aluminum and EPS foam.
• Two built-in retractable cup holders and snack trays for convenience.
• Premium soft fabrics with layered foam padding, machine washable.
• SafePlus belt guides for easy seatbelt access and self-buckling.
• Automotive steel LATCH connectors for quick and secure installation.
• Suitable for kids weighing 40 to 120 lbs and up to 63 inches tall.

Minimum User Weight: 40 lb
Maximum User Weight: 120 lb
Maximum User Height: 63 in
Product Height: 27.2 in
Product Width: 20.5 in
Product Depth: 16.1 in
Seat Weight: 18.3 lb
Number of Head Support Positions: 11

This product is eligible for Free Shipping.

Returns accepted within 30 days. See Returns Policy for details.

What is the weight limit for the Diono Monterey 2-in-1 Booster Seat
The booster is designed for children weighing between 40 and 120 lbs.

Can the Monterey be used as a backless booster
Yes, it transforms from a high-back to a backless booster as your child grows.

Does the booster have side impact protection
Yes, it features 4-layer side impact protection with high-impact aluminum and EPS foam.

How does the easy-adjust headrest and backrest work
The headrest has 11 positions, and the backrest expands up to 6.5 inches to grow with your child.

Does the booster come with cup holders
Yes, it includes two built-in retractable cup holders and snack trays.

Is the fabric easy to clean
Yes, the premium soft fabrics are removable and machine washable.

What makes the Monterey different from other boosters
Its unique easy-adjust headrest and backrest, 4-layer side impact protection, and 15 SafePlus upgrades set it apart.

Is the booster easy to install
Yes, it features automotive steel LATCH connectors and easy-adjust straps for quick and secure installation.

What age is the Monterey suitable for
It is suitable for children from approximately 4 years old up to 120 lbs or 63 inches tall.