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Diono Radian® 3RXT Latch All-in-One Convertible Car Seat

Diono Radian® 3RXT Latch All-in-One Convertible Car Seat

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Product details


The Diono Radian® 3RXT is the original 3 across All-in-One convertible car seat, trusted by over a million parents to protect their child from birth to booster (5 - 120 lb) Lovingly engineered with the famous Diono Steel Core and now rear-facing for even longer, expect 10 years of safety from just one car seat.


  • AWARD WINNING RADIAN® ALL-IN-ONE CONVERTIBLE CAR SEAT - From infant to booster seat, rear and forward facing the radian® 3RXT adapts as your child grows for 10 years of use (5 - 120 lb).
  • REAR FACING FOR LONGER - Designed for safe rear facing travel from 5 - 50 lbs complete with newborn travel high wedge to protect as they grow from baby, infant to toddler.
  • THE ORIGINAL RADIAN® 3 ACROSS: Built with our famous Radian® slim fit convertible design for a 3-across option only with Diono Radian® combinations, without compromising child or passenger comfort. Feel safe having your children secure in the backseat.
  • ONE HAND EASY ADJUST 12 POSITION HEADREST - Creates a safe and comfortable fit for rear facing, forward facing and booster seat modes.
  • STEEL REINFORCED FRAME - Mechanically engineered, reinforced steel core, made from automotive grade high strength steel to shield and protect.
Product dimensions
16 in. L x 17 in. W x 28.5 in. H
Installation Type
Rigid Latch System
TSA Approved
Model year
Recommended Age Range
From newborn up to 10 years
Child Maximum Weight (Forward Facing)
40 lbs
Child Maximum Weight (Booster)
120 lbs
Child Maximum Height (Forward Facing)
57 in.
Child Maximum Height (Rear Facing)
44 in.
Child Minimum Weight (Booster)
40 lbs
Child Minimum Weight (Forward Facing)
40 lbs
Child Minimum Height (Forward Facing)
30 in.
Product weight
28.1 lbs
Care instruction
‎Covers: Machine wash cold, line dry. Shell and Components: Spot clean
Height range
12 to 57.1 in.
Recline positions
Weight Range
5 to 120 lbs
Diono Radian® 3RXT Latch All-in-One Convertible Car Seat
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Top reviews
Would an expert recommend this for your baby?
Mariah Wear
Mariah Wear
Verified baby & toddler expert
Reviewed Aug 8, 2022

Use from birth this seat is rated for use from 5-50 pounds in rear facing. You can keep your child rear facing longer with this seat. The design is proprietary and fits 3 across in most vehicles. TSA approved for travel.