Diono Cambria 2XT 2-in-1 High-Back Booster

A 2-in-1 booster seat with 2 modes: high-back booster 40 to 120 lb, 38 to 63 in; backless booster 40 to 120 lb, 38 to 63 in.

At a glance

  • Fits children from 40 to 120 lb
  • Up to 63 in tall
  • 2 modes: high-back booster, backless booster
  • 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.

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

Who is the Cambria 2XT 2-in-1 High-Back Booster for?

The Diono Cambria 2XT is a 2-in-1 booster that works as a high-back booster and as a backless booster. Its manual limits it to children 40 to 120 lb and 38 to 63 in, it attaches with LATCH/UAS connectors, it has a two-stage recline, and it expires eight years from the date of purchase.

Reasons to consider it

  • High-back and backless modes, both rated for 40 to 120 lb and 38 to 63 in
  • LATCH/UAS connectors with a cam lock for attaching to lower anchors
  • A two-stage recline to match the vehicle seat
  • Covers that are machine washable in cold water

Things to weigh up

  • Diono's manual does not publish the seat's width, depth or weight
  • The manual does not explain how it differs from the Cambria 2
  • Backless mode needs the child's ears below the top of the vehicle seat or headrest
  • Not certified for use in aircraft

My take on the Cambria 2XT 2-in-1 High-Back Booster

It suits a family that wants a high-back booster with lower anchor connectors and a recline, which later converts to a backless seat. The trade-off is missing data: the manual publishes no width or seat weight. The Cambria 2 manual is identical apart from the model name, so the published documents do not show what the XT version changes.

A research summary of Diono’s published specifications and manual, read . Not a hands-on test or a crash-safety rating.

Who the Cambria 2XT 2-in-1 High-Back Booster fits

This seat covers 2 stages, and a child has to meet every limit of the stage they are in. 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.
Backless booster40 to 120 lb · 38 to 63 in
Only the base is left, so the vehicle seat has to support the child’s back and head, and the belt guide sits at the hip.
A school-age child with a backpack beside an empty high-back booster

What are the Cambria 2XT 2-in-1 High-Back Booster weight, height and age limits?

Diono Cambria 2XT 2-in-1 High-Back Booster limits by mode
ModeChild weightChild heightMinimum ageConditions
High-back booster40 to 120 lb38 to 63 inNot published—
Backless booster40 to 120 lb38 to 63 inNot publishedChild's ears must be below the top of the fully raised vehicle seat or headrest

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

Cambria 2XT 2-in-1 High-Back Booster specifications

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

How the Cambria 2XT 2-in-1 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 Cambria 2XT 2-in-1 High-Back Booster have?

  • LATCH/UAS connectors

What to know before you live with it

How it installs

This booster positions the vehicle's lap and shoulder belt on the child; a lap belt alone is not allowed. The LATCH/UAS connectors attach it to the lower anchors after you press the cam lock lever and extend the straps. Tighten one strap and then the other while pushing the booster back so it rests flat on the seat bottom and touches the seat back. Diono recommends the connectors whenever the vehicle has lower anchors, and otherwise says to buckle the empty booster with the vehicle belt. Do not use LATCH/UAS if it interferes with the seat belt.

Source: Diono Cambria 2XT manual (PDF)

Getting the belt fit right

Grip the headrest height adjuster lever and set the shoulder belt guide slightly above the child's shoulders, at least 1 cm. Route the shoulder belt through the guide, then fasten the lap belt through both lap belt guides so it lies low across the hips, not the belly. The shoulder belt must not touch the neck. The buckle should line up with the belt path guides; if it is pulled across the lap belt guide into the seat, the manual says to pick another seating position. Never lock the vehicle's retractor.

Source: Diono Cambria 2XT manual (PDF)

Using it backless

Remove the backrest, fold the backrest insert under the seat bottom cover and check the LATCH/UAS connectors are still secure. Backless use is only for children whose ears are below the top of the vehicle seat or headrest. If the shoulder belt does not fit the child correctly, the manual says the seat must be used with the backless shoulder belt guide strap stored under the seat, adjusted so the RED guide is just above the shoulder.

Source: Diono Cambria 2XT manual (PDF)

Is the Cambria 2XT 2-in-1 High-Back Booster recalled?

  • 21C002000: does not cover this model. Diono's owner notice for campaign 21C002000 covers only Cambria 2 boosters, models 31200-US-01, 31201-US-01 and 31202-US-01, built September through November 2020, and states that no other Diono products are included. The Cambria 2XT is a different model and is not named. Campaign source (read ).

Each campaign naming this family was read against this model’s numbers and build dates, and none covers it. Still check your seat’s model number and date of manufacture before use, especially on a used seat.

NHTSA recall search · Recent car seat recalls

Cambria 2XT 2-in-1 High-Back Booster: common questions

What are the Cambria 2XT height and weight limits?

The manual says 40 to 120 lb (18 to 54 kg) and 38 to 63 in (97 to 160 cm), in both high-back and backless mode.

Diono Cambria 2XT manual (PDF) (opens in a new tab)

Is the Cambria 2XT different from the Cambria 2?

Diono's Cambria 2 manual gives the same 40 to 120 lb and 38 to 63 in limits and the same instructions. The manuals do not state a difference, so I would compare the current product listings.

Diono Cambria 2 support page (opens in a new tab)

How do I wash the Cambria 2XT cover?

Detach the backrest, then remove the headrest, backrest and seat bottom covers. Machine wash separately in cold water on a gentle cycle with mild detergent, or hand wash, and dry flat away from direct sunlight; do not bleach, iron or dry clean.

Diono Cambria 2XT manual (PDF) (opens in a new tab)

When does the Cambria 2XT expire?

The manual says it is expired over eight years from the date of purchase.

Diono Cambria 2XT manual (PDF) (opens in a new tab)

Can the Cambria 2XT be used on a plane?

No. Diono states it is not certified for use in aircraft because aircraft seats have no shoulder belt.

Diono Cambria 2XT manual (PDF) (opens in a new tab)

Answers refer to the model and manual version on this page. Check the instructions supplied with your seat.

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
Cambria 2XT 2-in-1 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
Everett NXT 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