Diono Radian 3QX vs Joie matcha spin SI
The Radian 3QX rear-faces up to 50 lb, versus 40 lb. The Radian 3QX is 1.8 in narrower.
Only the differences are shown.
| Diono Radian 3QX | Joie matcha spin SI | |
|---|---|---|
| Type | All-in-one | All-in-one |
| List price | $399.99 | $399.99 |
| Rear-facing weight | 4–50 lbHighest rear-facing limit | 4–40 lb |
| Rear-facing height | 18–44 in | Up to 43 in |
| Forward-facing weight | 22–65 lb | 30–65 lb |
| Forward-facing height | 30–57 in | Up to 49 in |
| Booster weight | 40–120 lb | 40–100 lb |
| Booster height | 40–57 in | Up to 57 in |
| Seat weight | 29.6 lb | 29.21 lbLightest |
| Width | 17 inNarrowest | 18.8 in |
| Head rule | Rear-facing: Top of head must be 1.5 in. (3.8 cm) below the top of the car seat shell. Forward-facing: Top of child's ears MUST be below top of car seat shell. | Rear-Facing: The harness straps MUST be AT or JUST BELOW the child’s shoulders, and the top of child’s head MUST be at least 1 in. (2.5 cm) below the top of the child restraint. |
| Newborn insert | Not listed | Infant insert can be used for smaller babies, but MUST be removed once the child reaches 11 lb. (5 kg). |
| Installation | LATCH, seat belt | lower anchor attachments, vehicle seat belt, LATCH with tether, top tether for forward-facing |
| Load leg | No | No |
| Anti-rebound bar | Yes | No |
| Rotates | No | Yes |
| Harness heights | Not listed | 15 |
| Recline positions | Not listed | 4 |
| Aircraft label | Certified for aircraft, per the maker | Not certified for aircraft |
| No added flame retardants | No | Not listed |
| Expires after | 10 years | 10 years |
Diono Radian 3QX
Diono's slim 17 in all-in-one that rear-faces to 50 lb and carries a child through high-back booster to 120 lb.
- 17 in wide for tight back seats
- Rear-facing to 50 lb
- Steel core frame
- Heavy at 29.6 lb
- Needs significant front-to-back room rear-facing
Joie matcha spin SI
Rotating three-mode Joie seat (rear-facing, forward-facing, highback booster) with a spin in each mode, listed in stock on the Joie US site.
- Spin in rear-facing, forward-facing and highback booster modes
- Headrest and harness adjust together to 15 positions
- 4 recline positions
- Seat weight of 29.21 lb
- Manual PDF not opened
Radian 3QX or matcha spin SI?
Answers come from each maker's published specs. Safety and health questions link to the agency or medical source.
Which one will my child use longer, the Radian 3QX or the matcha spin SI?
The Diono Radian 3QX: it goes rear-facing, then forward-facing with a harness, then booster, up to 120 lb. The matcha spin SI goes rear-facing, then forward-facing with a harness, then booster, up to 100 lb. The Radian 3QX expires after 10 years.
Which is easier to travel with?
Radian 3QX: certified for planes, 29.6 lb. matcha spin SI: 29.2 lb.
Still wondering? Write to us at hello@cribpicks.com and we'll look it up.