Diono Connect3 R 2-in-1 High-Back Booster
The Diono Connect3 R 2-in-1 High-Back Booster is 16.3 in wide, weighs 10.8 lb, and has a booster weight limit of 120 lb, per Diono.
- $109.99List price
- 120 lbBooster to
- 10.8 lbSeat weight
- 16.3 inWidth
Connect3 R 2-in-1 High-Back Booster: key facts
- The Diono Connect3 R 2-in-1 High-Back Booster works as a booster from 40 to 120 lb and 38 to 63 in tall, per Diono.
- It installs with vehicle lap and shoulder belt (high-back) or backless mode: do not use unless there is a vehicl.
- Diono says it expires 8 years after the date of manufacture.
- Diono says it isn't certified for aircraft.
- It's 16.3 in wide at the widest point and weighs 10.8 lb.
From Diono's published specs. Always follow the limits on your seat's labels.
How the Connect3 R 2-in-1 High-Back Booster 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.
Within the typical range for booster seats (100 lb to 120 lb).
Within the typical range for booster seats (8 years to 10 years).
Below the typical range for booster seats (17 in to 18.6 in).
Within the typical range for booster seats (6 lb to 13.2 lb).
Within the typical range for booster seats ($55.99 to $159.99).
What sets the Connect3 R 2-in-1 High-Back Booster apart
Measured against the 65 booster seats we compare, from each maker's published specs.
- 4th narrowestof the 31 booster seats with it published: 16.3 in
- Weight: 10.8 lbin the middle half of the 42 booster seats that publish it (6 lb to 13.2 lb)
Next to its closest matches
- Chicco KidFit ClearTex PlusNext to it, the Connect3 R 2-in-1 High-Back Booster is 10 lb higher booster limit; 0.7 in narrower; 0.8 lb heavier.
- Safety 1st Grow and Go 2-in-1 Belt-Positioning Booster featuring ComfortWingsNext to it, the Connect3 R 2-in-1 High-Back Booster is 20 lb higher booster limit; 2 years shorter before it expires; 2.7 in narrower.
- Graco TurboBooster Stretch2FitNext to it, the Connect3 R 2-in-1 High-Back Booster is 10 lb higher booster limit; 2 years shorter before it expires; 3.4 in narrower.
Flying with the Connect3 R 2-in-1 High-Back Booster
Diono's label: “Diono booster seats cannot 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
- Maker lists conversion to backless booster with shoulder belt positioning clip and carry handle
- Maker lists an 11-position head and backrest and 2 backrest recline positions
Worth checking
- Maker states boosters cannot be used on an airplane
Where to buy the Connect3 R 2-in-1 High-Back Booster
Prices and availability change. We may earn a commission from some links.
- 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 Connect3 R 2-in-1 High-Back Booster | |
|---|---|
| Type | Booster |
| List price | $109.99 |
| Booster weight | 40–120 lb |
| Booster height | 38–63 in |
| Seat weight | 10.8 lb |
| Width | 16.3 in |
| Installation | vehicle lap and shoulder belt (high-back), backless mode: do not use unless there is a vehicl |
| Load leg | No |
| Anti-rebound bar | No |
| Rotates | No |
| Recline positions | 2 |
| Aircraft label | Not certified for aircraft |
| Expires after | 8 years |
Compare the Connect3 R 2-in-1 High-Back Booster with
How each closest rival differs from the Connect3 R 2-in-1 High-Back Booster, from the makers' specs.
- ChiccoKidFit ClearTex Plus17 in wide10 lb$109.99
- 10 lb lower booster limit
- 0.7 in wider
- 0.8 lb lighter
- Safety 1stGrow and Go 2-in-1 Belt-Positioning Booster featuring ComfortWings19 in wide$104$104.99
- 20 lb lower booster limit
- 2 years longer before it expires
- 2.7 in wider
- GracoTurboBooster Stretch2Fit19.7 in wide11.7 lb$99.99
- 10 lb lower booster limit
- 2 years longer before it expires
- 3.4 in wider
- JoieBasil 2-in-1 Belt-Positioning Booster18.6 in wide9 lb$99.99
- 2 years longer before it expires
- 2.3 in wider
- 1.8 lb lighter
Connect3 R 2-in-1 High-Back Booster: questions answered
From Diono's published specs, last checked 2026-11-06.
Will the Diono Connect3 R 2-in-1 High-Back Booster fit three across or in a small car?
It's narrower than 91% of the boosters we track, at 16.3 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 Connect3 R 2-in-1 High-Back Booster 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.
Connect3 R 2-in-1 High-Back Booster or KidFit ClearTex Plus: what's different?
By the makers' specs, the KidFit ClearTex Plus has no added flame retardants (maker's claim). See every spec side by side.
Is it OK to buy a used Connect3 R 2-in-1 High-Back Booster?
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
- Joiecilantro fx 2-in-1 Belt-Positioning Booster7 lb$119$119.99
- Peg PeregoViaggio Shuttle 1206 lb$129$129.99
- DionoEverett NXT18.5 in wide11.1 lb$129.99
- ClekOzzi18 in wide5 lb$129.99
- Baby TrendKoa Slim High Back Booster9.8 lb$79$79.99
- Baby TrendProtect 2-in-1 Folding Booster$79booster to 120 lb$79.99
Where these specs come from
Last checked 2026-11-06. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.