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Diono does not sell this seat on Amazon. See its own site for photos.

Diono Everett NXT High-Back Booster

A high-back booster seat with one mode: high-back booster 40 to 120 lb, 38 to 63 in.

At a glance

  • Fits children from 40 to 120 lb
  • Up to 63 in tall
  • High-back booster only
  • 8-year usable life
Not sold on Amazon

Diono lists this seat on its US site. Buy from Diono or an authorized retailer, and confirm the exact model number before you buy.

Diono product page (opens in a new tab) Manual (PDF, opens in a new tab)

Specifications checked against Diono’s US site and manual on . Not hands-on tested. How I research

Who the Everett NXT High-Back Booster fits

This seat covers one stage. Diono gives it a 8-year life from the date of manufacture, so check the date label before using a hand-me-down.

High-back booster40 to 120 lb · 38 to 63 in
The seat’s own back and belt guide route the vehicle belt across the shoulder, and the sides give the child something to lean on when they sleep.
A school-age child with a backpack beside an empty high-back booster

What are the Everett NXT High-Back Booster weight, height and age limits?

Diono Everett NXT High-Back Booster limits by mode
ModeChild weightChild heightMinimum ageConditions
High-back booster40 to 120 lb38 to 63 inNot published—

A child must meet every limit for the mode they use. The labels on your seat and its manual are the final word.

Everett NXT High-Back Booster specifications

Seat weight
Not published
Width
Not published
Usable life
8 years
Aircraft use
Not certified for aircraft

How the Everett NXT High-Back Booster installs

Lower anchors
LATCH/UAS connectors. Check your vehicle manual for which seating positions have anchors, and switch to the seat belt once the child passes the anchor weight limit in the manual.

Every install is a fit between one seat and one vehicle. Read both manuals, and use a free inspection station if anything is unclear.

An empty car seat installed on a back seat, seen through an open car door

Will it fit your car?

Diono does not publish a width for this seat, so measure your back seat and compare it with the seat in a store before buying.

  • Check your vehicle manual for lower anchor positions and any head-restraint rules.
  • Rear-facing seats need front-seat room: try the install behind the driver before you commit.
  • Not certified for aircraft use: plan on gate-checking it or using a different seat to fly.

What features does the Everett NXT High-Back Booster have?

  • LATCH/UAS connectors

Is the Everett NXT High-Back Booster recalled?

No campaign in the current NHTSA child-restraint data names this model family, and I have not run a separate review for it. Check your seat’s model number and date of manufacture before use.

NHTSA recall search · Recent car seat recalls

Before you buy

  1. Weigh and measure your child. The limits above are the manufacturer’s, and a child has to meet all of them for the mode they will use.
  2. Confirm the exact version. Colors, retail exclusives and model numbers change limits more often than you would expect.
  3. Read the manual before you buy, not after. It is linked above and holds the fit rules, the install methods and the expiry.
  4. Check recalls by model number and date of manufacture, and register the seat with Diono so you hear about the next one.

Sources

Other Diono booster seats

ModelTop child weightSeat weightWidthUsable life
Everett NXT High-Back Booster (this seat)120 lb——8 years
Connect3 R 2-in-1 High-Back Booster120 lb——8 years
Connect3 R Backless Booster120 lb——8 years
Connect3 RXT 2-in-1 High-Back Booster120 lb——8 years
Connect3 RXT Backless Booster120 lb——8 years
Cambria 2 2-in-1 High-Back Booster120 lb——8 years
Cambria 2XT 2-in-1 High-Back Booster120 lb——8 years
Monterey 2XT 2-in-1 High-Back Booster120 lb——8 years
Monterey 4DXT 2-in-1 High-Back Booster120 lb——8 years
Monterey 5iST FixSafe High-Back Booster120 lb——8 years
Monterey 6XT SafePlus High-Back Booster120 lb——8 years
Monterey 6DXT SafePlus High-Back Booster120 lb——8 years
Solana Backless Booster120 lb——8 years
Solana 2 Backless Booster120 lb——8 years

Other high-back booster seats whose published weight and height limits overlap the Everett NXT High-Back Booster.