Backless booster
Diono Solana 2 Backless Booster
| Mode | Weight | Height |
|---|---|---|
| Backless booster | 40–120 lb | 38–63 in |
- Seat weight
- Not published
- Width
- Not published
- Usable life
- 8 years
- Aircraft
- Not certified
Diono does not sell this seat on Amazon. See its own site for photos.
Diono Solana Backless Booster
A backless booster seat with one mode: 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
- Backless 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.
Who is the Solana Backless Booster for?
The Diono Solana is a backless booster for children 40 to 120 lb and 38 to 63 inches tall whose ears are below the top of the fully raised vehicle seat or headrest. It has no LATCH connectors, uses only the vehicle lap and shoulder belt, includes a shoulder belt guide strap, and expires 8 years after purchase.
Reasons to consider it
- Diono lists it at 2.9 lb, easy to move between cars
- A red shoulder belt guide strap stored under the cover
- Two cup holders and a manual pocket under the cover
- A 120 lb and 63 inch upper limit with an 8 year life
Things to weigh up
- No LATCH or tether connection
- Only for seating positions with a vehicle seat back or headrest above the child's ears
- Cannot be used with lap-only, dual retractor, inflatable, motorized or door-mounted belts
- Not certified for aircraft
My take on the Solana Backless Booster
The Solana suits an older child who already fits the vehicle belt well and needs a light seat to move between cars. The trade-off is that it has no LATCH connectors and no back, so the vehicle seat or headrest must reach above the child's ears. Diono lists it at 16.9 in wide and 2.9 lb, and the Solana 2 at 18.5 in wide and 6.1 lb, and only the Solana 2 offers a LATCH version.
A research summary of Diono’s published specifications and manual, read . Not a hands-on test or a crash-safety rating.
Who the Solana Backless 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.
- 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.
What are the Solana Backless Booster weight, height and age limits?
| Mode | Child weight | Child height | Minimum age | Conditions |
|---|---|---|---|---|
| Backless booster | 40 to 120 lb | 38 to 63 in | Not published | Child'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.
Solana Backless Booster specifications
- Seat weight
- Not published
- Width
- Not published
- Usable life
- 8 years
- Aircraft use
- Not certified for aircraft
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 to know before you live with it
Seating position and belt fit
The booster must sit flat on the vehicle seat bottom and touch the seat back. The manual allows it only where the child's ears are below the top of the vehicle seat or headrest. The lap belt goes through both lap belt guides, flat across the hips and not high over the belly, and the shoulder belt must lie flat on the shoulder without touching the neck. You tighten by pulling the shoulder belt upward. The buckle should line up with the red belt path guides; if it is pulled into the seat, choose another position. The shoulder belt must not go over the armrest.
Source: Diono Solana manual, 2025 (PDF)
When to use the shoulder belt guide strap
The manual says that if the vehicle shoulder belt does not fit the child correctly, the seat must be used with the shoulder belt guide strap. It is stored under the seat cover. You seat the child with the lap and shoulder belts in place, attach the red guide to the diagonal shoulder belt and adjust the strap so the guide sits just above the shoulder. The shoulder belt should then lie flat across the shoulder and away from the neck. Leave a switchable retractor in ELR mode for booster use.
Source: Diono Solana manual, 2025 (PDF)
Washing the cover and storing the manual
The manual stores in a pocket under the seat cover, and the manual says to take it out before washing the cover. The cover can be machine or hand washed in cold water on a gentle cycle with mild detergent, then dried flat and away from direct sunlight before re-use or storage. Do not bleach, iron or dry clean it. The shell and other parts are spot cleaned with a damp cloth, warm water and mild detergent, then towel dried. The manual also rules out solvents, harsh detergents and lubricating any part of the seat.
Source: Diono Solana manual, 2025 (PDF)
Is the Solana Backless 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.
Solana Backless Booster: common questions
What are the Diono Solana weight and height limits?
The manual allows children who weigh 40 to 120 lb and are 38 to 63 inches tall, and only with the vehicle lap and shoulder belt.
Does the Diono Solana have LATCH?
No. Diono says the Solana has no LATCH or tether system and that the Solana 2 offers a LATCH option.
How big and heavy is the Diono Solana?
Diono lists it at 16.9 in wide, 13.2 in deep and 7.7 in tall, with a seat weight of 2.9 lb. It says its boosters fit 2-across in most cars and that each vehicle is different.
How does the Solana compare with the Solana 2?
Diono lists the Solana 2 at 18.5 in wide, 16.1 in deep and 9.4 in tall, with a seat weight of 6.1 lb, and offers it with a LATCH option. Both are listed for 40 to 120 lb.
Can the Solana be used in a seat without a headrest?
Diono says not to use it unless there is a vehicle headrest for that seating position. The manual also requires the child's ears to be below the top of the vehicle seat or headrest.
Can I use the Solana on an airplane?
No. The manual says it is not certified for aircraft, because airplane seats do not have shoulder belts.
Answers refer to the model and manual version on this page. Check the instructions supplied with your seat.
Before you buy
- 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.
- Confirm the exact version. Colors, retail exclusives and model numbers change limits more often than you would expect.
- Read the manual before you buy, not after. It is linked above and holds the fit rules, the install methods and the expiry.
- 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
| Model | Top child weight | Seat weight | Width | Usable life |
|---|---|---|---|---|
| Solana Backless Booster (this seat) | 120 lb | — | — | 8 years |
| Connect3 R 2-in-1 High-Back Booster | 120 lb | — | — | 8 years |
| Connect3 R Backless Booster | 120 lb | — | — | 8 years |
| Connect3 RXT 2-in-1 High-Back Booster | 120 lb | — | — | 8 years |
| Connect3 RXT Backless Booster | 120 lb | — | — | 8 years |
| Cambria 2 2-in-1 High-Back Booster | 120 lb | — | — | 8 years |
| Cambria 2XT 2-in-1 High-Back Booster | 120 lb | — | — | 8 years |
| Everett NXT High-Back Booster | 120 lb | — | — | 8 years |
| Monterey 2XT 2-in-1 High-Back Booster | 120 lb | — | — | 8 years |
| Monterey 4DXT 2-in-1 High-Back Booster | 120 lb | — | — | 8 years |
| Monterey 5iST FixSafe High-Back Booster | 120 lb | — | — | 8 years |
| Monterey 6XT SafePlus High-Back Booster | 120 lb | — | — | 8 years |
| Monterey 6DXT SafePlus High-Back Booster | 120 lb | — | — | 8 years |
| Solana 2 Backless Booster | 120 lb | — | — | 8 years |
Seats to compare with the Solana Backless Booster
Other backless booster seats whose published weight and height limits overlap the Solana Backless Booster.
Backless booster
Diono Connect3 R Backless Booster
| Mode | Weight | Height |
|---|---|---|
| Backless booster | 40–120 lb | 38–63 in |
- Seat weight
- Not published
- Width
- Not published
- Usable life
- 8 years
- Aircraft
- Not certified
Backless booster
Diono Connect3 RXT Backless Booster
| Mode | Weight | Height |
|---|---|---|
| Backless booster | 40–120 lb | 38–63 in |
- Seat weight
- Not published
- Width
- Not published
- Usable life
- 8 years
- Aircraft
- Not certified
Backless booster
Britax UpNGo Backless Booster Seat
| Mode | Weight | Height |
|---|---|---|
| Backless booster | 40–120 lb | 46–63 in |
- Seat weight
- 3.1 lb
- Width
- 17.1 in
- Usable life
- 10 years
- Aircraft
- Not certified
$59.99Raven Black · Amazon price as of 2026-11-02 21:50 UTC, subject to change