
Diono Monterey 4DXT Latch, 2-in-1 High Back Booster Car Seat with Expandable Height, Width, Advanced Side Impact Protection, 8 Years 1 Booster, Black
Amazon Price as of 03/04/2025 01:09 GMT+00:00
$199.99
Deal Detector and Price History
We analyze price history to spot good deals

Include Prime Price
Bad Deal
average price $170.25
$29.74 higher than average
$124.99
$174.99
Price History
Product Description
Weve taken the award-winning Monterey and painstakingly engineered 15 upgrades to create the next generation of boosters. From the remodeled headrest, enhanced fabric covering, contoured seat base and breathable exo-shell panels, weve considered every last detail to create a contemporary new look. Contoured to fit and shaped in harmony with your child, Monterey 4DXT adjusts and expands as your little one grows to offer wonderful all-round protection. The height and width can be adjusted independently for safety that envelopes their head and shoulders up to 12 years of age. A simple-to-use dial on the back adjusts the width of the seat to fit a childs shoulders up to 20 wide, while the headrest adjusts up to 6.4 height with one hand for an easy precise fit. The remodeled headrest is lined with thick EPP foam for better child comfort and improved side impact performance. This is combined with deeper side wings and Diono 4-layer Side Impact Protection System built in. From the EPP foam coating, to the molded rigid shell casing and EPS coated outer shell, weve lovingly engineered every detail to keep your little one safe, mile after mile. Here at Diono we dont just stop at superior safety. The ergonomically contoured seat base improves the child seating position with luxury AIRTEK foam cushioning for total child comfort. Weve even added breathable exo-shell side panels to enhance airflow to keep them cool on the move. We've reduced the width of the vehicle seatback to make installation easier, improving access to vehicle seatbelts and promoting independent buckling. And with easily removable backrest and intuitive belt guides, the Monterey 4DXT offers 2 seats in 1 when they are ready to graduate to a backless booster. Like all Diono boosters, expect up to 8 years of reliable service. So, when it comes to your next booster, look to the Monterey 4DXT latch to take your child on their journey in safety and style.
• 8 Years One Booster - for your big kid from 40 - 120 lb. It's all you will ever need.
• Easy-adjust - 11-position headrest that grows up with your child. Engineered for safety and comfort with 2 layers of SafePlus Side Impact Protection.
• One of a kind - easy-adjust expandable backrest allows up to 6.5 in to grow with your big kid. With 4 layers of SafePlus Side Impact Protection and deep padded cushioning.
• Two built-in retractable 2-in-1 cup holder and snack tray - keeps your big kid's drink close at hand and stows away their essentials.
• Our contoured premium soft fabrics - with layered foam padding that provide comfort and support can be easily removed for machine washing.
• SafePlus belt guides - easy access to seatbelt buckle help your big kid with self buckling - don't forget to check though!
• Easy, quick and secure installation - engineered with automotive steel LATCH connectors and 2 easy adjust LATCH straps allow you to quickly tighten and secure your booster to your vehicle.
• Engineered with side impact protection - our rigid shell is reinforced with 2 layers of high-impact aluminum and EPS energy absorbing foam,to protect the head, shoulders, and torso.
🔥 Top Diono deals you shouldn’t miss!

Diono Solana, No Latch, Pack of 2 Backless Booster Car Seats, Lightweight, Machine Washable Covers, Cup Holders, Blue Surge/Pink Cotton Candy
-12% $43.99
View at Amazon
Diono Solana, No Latch, Single Backless Booster Car Seat, Lightweight, Machine Washable Covers, Cup Holders, Blue
-20% $23.99
View at Amazon
Diono Radian 3R, All-in-One Convertible Car Seat, Rear and Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Blue Surge
-8% $164.99
View at Amazon
Diono Radian 3R, All-in-One Convertible Car Seat, Rear and Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Pink Cotton Candy
-8% $164.99
View at Amazon
Diono See Me Too Rear View Forward Facing Baby Mirror for Car, Fully Adjustable Driver Mirror with Wide Crystal Clear View, Shatterproof, Crash Tested
-20% $9.99
View at Amazon
Diono Luxury All Weather Stroller Footmuff, Universal Fit from Baby to Toddler with Cozy Super Soft Padding, Weatherproof, Water Resistant Lining, Black Platinum
-20% $72.05
View at Amazon
Diono Car Seat Cup Holders for Radian, Everett and Rainier Car Seats, Pack of 2 Cup Holders, Purple Plum
-20% $14.99
View at Amazon
Diono XL Car Seat Cup Holders for Radian and Everett Car Seats, Pack of 2 Cup Holders, Black
-61% $7.49
View at Amazon
Diono Angle Adjuster Car Seat Leveler, Car Seat Wedge Cushion, Foam Provides More Legroom for Rear-Facing Car Seats
-19% $19.99
View at Amazon
Diono Cuddle Soft 2-in-1 Baby Head Neck Body Support Pillow For Newborn Baby Super Soft Car Seat Insert Cushion, Perfect for Infant Car Seats, Convertible Car Seats, Strollers, Gray/Pink
-20% $15.99
View at Amazon
Diono Anti Rebound Bar Fabric Cover - Compatible with Radian 3QXT SafePlus, 3QXT FirstClass SafePlus, 3QX SafePlus, 3RXT SafePlus, 3R SafePlus, 1-Piece
-54% $11.60
View at Amazon
Diono Cambria 2XT XL, Dual Latch Connectors, 2-in-1 Belt Positioning Booster Seat, High-Back to Backless Booster with Space and Room to Grow, 8 Years 1 Booster Seat, Pink Cotton Candy
-20% $79.99
View at Amazon
Diono Solana, No Latch, Single Backless Booster Car Seat, Lightweight, Machine Washable Covers, Cup Holders, Pink
-20% $23.99
View at Amazon
Diono Cambria 2XT XL, Dual Latch Connectors, 2-in-1 Belt Positioning Booster Seat, High-Back to Backless Booster with Space and Room to Grow, 8 Years 1 Booster Seat, Black Storm
-20% $79.99
View at Amazon
Diono Connect3 RXT Backless Booster, Pack of 2, Slim Fit 3-Across in Many Mid-Sized Sedans and SUVs, for Children from 40-120 lbs., Lightweight with Latch connectors, Blue Surge/Pink Cotton Candy
-10% $89.99
View at Amazon
Diono Connect3 RXT Backless Booster, Pack of 2, Slim Fit 3-Across in Many Mid-Sized Sedans and SUVs, for Children from 40-120 lbs., Lightweight with Latch connectors, Pink Cotton Candy
-10% $89.99
View at Amazon
Diono Cambria 2XT XL, Dual Latch Connectors, 2-in-1 Belt Positioning Booster Seat, High-Back to Backless Booster with Space and Room to Grow, 8 Years 1 Booster Seat, Purple Wildberry
-20% $79.99
View at Amazon
Diono Connect3 RXT Backless Booster, Pack of 2, Slim Fit 3-Across in Many Mid-Sized Sedans and SUVs, for Children from 40-120 lbs., Lightweight with Latch connectors, Blue Surge
-10% $89.99
View at Amazon
Diono Connect3 RXT Backless Booster, Pack of 2, Slim Fit 3-Across in Many Mid-Sized Sedans and SUVs, for Children from 40-120 lbs., Lightweight with Latch connectors, Purple Wildberry
-10% $89.99
View at Amazon
Diono Connect3 RXT Backless Booster, Pack of 2, Slim Fit 3-Across in Many Mid-Sized Sedans and SUVs, for Children from 40-120 lbs., Lightweight with Latch connectors, Blue Razz Ice
-10% $89.99
View at Amazon
Diono Connect3 R 2-in-1 High Back Booster, Slim Fit 3-Across in Many Mid-Sized Sedans and SUVs, for Children from 40-120 lbs., Lightweight with Cupholder, Blue Razz Ice
$99.99
View at Amazon
Diono LiteClik 30 R SafePlus Infant Car Seat and Base, Rear-Facing for Infants 4-30lbs, SafePlus Engineering, with Infant Insert, UPF 50+ Sunshade (Black)
$159.99
View at Amazon