Diono Radian is one of the best narrow booster seats.
Amazon currently has these Diono Radian convertible seats on sale for the below prices:
- Diono Radian 3R All-in-One Convertible Car Seat $199.99
- Diono Radian 3RX All-in-One Convertible Car Seat $211.99
- Diono Radian 3RXT All-in-One Convertible Car Seat $254.99
The Diono Radian 3RXT is one of the top narrow booster seats. This all-in-one convertible car seat fits your child in the rear-facing position from 5-45 lbs, in the forward-facing position with a 5-point harness up to 65 lbs, and in booster mode up to 120 lbs.
They are the only all-in-one car seats with a full steel frame, making them one of the safest and narrowest car seat on the market today.
This narrow car seat is only 17 inches wide, so you can fit 3 of these car seats across in most mid-sized vehicles.
It is narrower than Diono’s other convertible and booster seats. For example, the Diono Pacificia, Rainier and Cambria are all 18 inches wide.
This car seat is comparable to the Diono Radian 3R, which is a little cheaper and has less weight limitation in the rear-facing and booster modes.
If you are parents of triplets or 3 children, you might want to try this popular seat out.
Click to read more about the top narrow booster seats.