Evenflo Revolve360 Slim vs Diono Radian 3R

Both are convertible car seats — here are their published manufacturer specs side by side.

This compares published manufacturer specs — not safety or fit advice. The seat's manual, your vehicle's manual, NHTSA's tools and a certified CPST are the fit-and-safety authority; always check them before installing.

Spec	Evenflo Revolve360 Slim	Diono Radian 3R
Stage	Convertible	Convertible
Narrow (3-across)	–	✓
Extended rear-facing	✓	–
FAA-approved	–	✓
Lightweight / travel	–	–

How they differ

• the Diono Radian 3R is listed narrow (roughly ≤17″) for fitting three across a back seat; the Evenflo Revolve360 Slim isn't listed narrow
• the Evenflo Revolve360 Slim lists extended rear-facing (a higher rear-facing weight limit, ~40-50 lb); the Diono Radian 3R doesn't
• the Diono Radian 3R is FAA-approved for aircraft; the Evenflo Revolve360 Slim isn't (harnessed seats can be FAA-approved; boosters never are — a plane has no shoulder belt)

Where to buy

Check the Evenflo Revolve360 Slim price on Amazon →

Check the Diono Radian 3R price on Amazon →

As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Affiliate links never affect our specs or which seats we compare.

FAQ

What's the difference between the Evenflo Revolve360 Slim and the Diono Radian 3R?
The Evenflo Revolve360 Slim is extended rear-facing; the Diono Radian 3R is narrow for 3-across, FAA-approved for aircraft. Both are convertible car seats.

Is the Evenflo Revolve360 Slim or the Diono Radian 3R FAA-approved for flying?
The Diono Radian 3R is FAA-approved for aircraft; the Evenflo Revolve360 Slim is not. (Harnessed seats can be FAA-approved; booster seats never are, because a plane has no shoulder belt.)

Which fits three across, the Evenflo Revolve360 Slim or the Diono Radian 3R?
The Diono Radian 3R is listed narrow (~≤17″) for 3-across; the Evenflo Revolve360 Slim isn't. Three-across fit still depends on your exact vehicle — confirm before buying.

Which is right for my car and child, the Evenflo Revolve360 Slim or the Diono Radian 3R?
That depends on your specific vehicle and child — this page compares published manufacturer specs only, not fit or safety. Check the seat manual, your vehicle manual, NHTSA's car-seat finder and ideally a certified CPST before deciding.

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