The original Monterey booster has evolved! Back in 2008, the original American expandable booster seat was created right here at Diono. Fast forward to today as we welcome the next evolution in a long-standing legacy. Diono has taken the award-winning Monterey and painstakingly engineered 15 upgrades to create the Monterey® 4DXT. From the remodeled headrest, enhanced fabric covering, contoured seat base and breathable exo-shell panels, they’ve considered every last detail to create a contemporary new look.
Diono has taken all the unique and well-loved features from their award winning Monterey and introduced 15 upgrades in safety, comfort and style. Some of the upgrades include: improved head containment, remodeled headrest, deeper side wings, thicker cushioned headrest, exoshell side panels, ergonomically contoured base, 3x layer side impact protection, luxury memory foam, easy installation, buckle friendly fit, improved cup holders, and a fully covered backrest. Adjustable Protection
The height and width can be adjusted independently for safety that envelopes their head and shoulders up to 12 years of age. Side Impact Protection
Features the Diono 3-layer Side Impact Protection System built in. From the EPP foam coating to the molded rigid shell casing, Diono has got your little one covered. Total Child Comfort
The ergonomically contoured seat base and remodeled headrest improves the child seating position with luxury AIRTEI foam cushioning for total child comfort. Always Travel Ready
The Monterey 4DXT booster seat is super portable, lightweight and easy to store with a great flat pack feature that makes for a perfect travel companion for your little one. 8 Years of Adventure
Like all Diono boosters, expect up to 8 years of service, so you can rest assured the Monterey 4DXT will be with you for the long haul. This is a final sale item. This item is not eligible for returns or exchanges.