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Diono Solana

The Diono Solana is 16.9 in wide, weighs 9.2 lb, and has a booster weight limit of 120 lb, per Diono. Backless belt-positioning booster from Diono, installed with the vehicle seat belt and sold in the US store as a pack of 3.

  • 120 lbBooster to
  • 9.2 lbSeat weight
  • 16.9 inWidth
See it on Diono's site

When does it expire?

All booster seats

Solana: key facts

  • The Diono Solana works as a booster from 40 to 120 lb and up to 63 in tall, per Diono.
  • It installs with vehicle seat belt.
  • Diono says it expires 8 years after the date of manufacture.
  • Diono says it isn't certified for aircraft.
  • It's 16.9 in wide at the widest point and weighs 9.2 lb.

From Diono's manual and published specs. Always follow the limits on your seat's labels.

How the Solana stacks up

Against the 65 booster seats we track. The shaded band is where the middle half of them fall; the dot is this one.

Booster weight limit120 lbHighest booster limit of 64 booster seats

Within the typical range for booster seats (100 lb to 120 lb).

This one
100 lbmiddle 110 lb120 lb
Expiration8 years

Within the typical range for booster seats (8 years to 10 years).

This one
6 yearsmiddle 10 years12 years
Width16.9 in6th narrowest of 31

Below the typical range for booster seats (17 in to 18.6 in).

This one
10.2 inmiddle 17.3 in23.2 in
Weight9.2 lb21st lightest of 42

Within the typical range for booster seats (6 lb to 13.2 lb).

This one
1.8 lbmiddle 9.8 lb20.9 lb

What sets the Solana apart

Measured against the 65 booster seats we compare, from each maker's published specs.

  • 6th narrowestof the 31 booster seats with it published: 16.9 in
  • Weight: 9.2 lbin the middle half of the 42 booster seats that publish it (6 lb to 13.2 lb)

Next to its closest matches

  • Harmony Youth BoosterNext to it, the Solana is 10 lb higher booster limit; 2 years longer before it expires.
  • Diono Cambria 2XTNext to it, the Solana is 3.2 in narrower; 4 lb lighter.
  • Axkid UpNext to it, the Solana is 0.2 in narrower; 11.7 lb lighter; no load leg (the Up has it).

Flying with the Solana

Diono's label: “Diono booster seats are not meant to be used on airplane.” American lists “Booster seats with no approval label or shoulder harness” under seats and devices not approved for use on board (source).

What airlines say about car seats:

  • American: “Each ticketed customer is allowed 1 stroller and 1 car seat to be checked free of charge” “If an unoccupied, adjoining seat is not available, the gate agent will check the safety seat to your final destination.” Source
  • Alaska: “We will transport your child's car seat and stroller free of charge as checked baggage.” Source
  • JetBlue: “Checking a child safety seat will not count towards your checked baggage allowance and there is no fee assessed” Source
  • Spirit: “One (1) car seat will be accepted per child as checked baggage at no charge.” Source
  • Frontier: “strollers and car seats can be checked for free.” Source
  • Allegiant: “There is no charge for checking or gate checking one car seat per fare-paying passenger.” Source
  • Breeze: “Child seats may be carried on board the aircraft if a seat has been purchased for the Infant or Child” Source

Quoted from each airline's page as of 2026-11-02.

Listed features

  • Lists a 40-120 lb range
  • Maker describes it as easy to remove and store in the trunk

Worth checking

  • Backless design
  • Maker states it is not meant to be used on an airplane
  • 8-year life span counted from purchase date

Where to buy the Solana

Prices and availability change. We may earn a commission from some links.

good to know
  • Check for recalls: Search the agency's recall list with the model number and date code from the label: NHTSA recall search.
  • Car seat use and installation: see NHTSA's car seat page, which also lists free car seat inspection by certified technicians. Check the label and the maker's instructions, and ask your pediatrician about your child.

Full specs

Diono Solana
TypeBooster
Booster weight40–120 lb
Booster heightUp to 63 in
Seat weight9.2 lb
Width16.9 in
Installationvehicle seat belt
Load legNo
Anti-rebound barNo
RotatesNo
Aircraft labelNot certified for aircraft
Expires after8 years

Compare the Solana with

How each closest rival differs from the Solana, from the makers' specs.

Ask the meadow

Solana: questions answered

From Diono's published specs, last checked 2026-11-06.

Will the Diono Solana fit three across or in a small car?

It's narrower than 84% of the boosters we track, at 16.9 in. The narrowest is the Mifold Comfort Grab-and-Go Booster at 10.2 in. Fit depends on your vehicle; check each seat's manual and your vehicle manual. Car seat use and installation: see NHTSA's car seat page, which also lists free car seat inspection by certified technicians. Check the label and the maker's instructions, and ask your pediatrician about your child.

Can you bring the Diono Solana on a plane?

Diono doesn't list it as certified for aircraft, so it can be checked as luggage but not used in the plane seat. See seats approved for planes.

Is it OK to buy a used Solana?

NHTSA publishes guidance on used car seats on its car seat page. Diono lists a lifespan of 8 years from manufacture for this model. Check the label and the maker's instructions, and ask your pediatrician about your child.

Still wondering? Write to us at hello@cribpicks.com and we'll look it up.

More booster seats

Where these specs come from

Last checked 2026-11-06. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.