Say hello to the only car seat you could ever need.
Lovingly engineered with a full steel frame, the Diono radian rXT all-in-one car seat provides unmatched safety for your child from birth to booster – and every marvelous moment in between.
Free shipping on all car seats28.35 inches 16.93 inches 16.14 inches
Unmatched safety. All-in-one simplicity.
Your child’s security is our top priority. We engineered our radian® rXT with premium, innovative features like a steel alloy frame, aluminum reinforced sidewalls, energy absorbing EPS foam and a reinforced adjustable head support to keep your little one protected and comfortable.
Some say three’s a crowd. We say, the more the merrier! Our radian® rXT car seats fit 3-across in most mid-size vehicles.
The radian® rXT keeps children comfortably rear-facing from 5-45 pounds for the safest possible position. Premium, plush head and body support cushions are included for newborns and infants.
Room to grow
Accommodates forward-facing children up to 80 pounds in a 5-point harness and converts to booster mode for kids 50-120 pounds. The aluminum reinforced, adjustable head support and sidewalls provide additional side impact protection.
Worth the Weight
Our convertible car seats are made from steel for safety you can feel. The fully integrated steel frame is wrapped in thick engineered plastic to withstand severe crash forces. Deep, aluminum reinforced sidewalls provide excellent side impact protection, while energy absorbing EPS foam surrounds your child for ultimate safety. Diono car seats are definitely worth the weight.
NEW! Premium, plush interlock knit fabric (available in Black Cobalt, Black Mist, Black Plum, Black Scarlet and Essex colors)
Full steel frame for unmatched safety
Comfortably seats rear-facing children from 5-45 pounds
Seats forward-facing children from 20-80 pounds in a 5-point harness
Converts to a booster for children from 50 pounds up to 120 pounds, and up to 57″ tall – proper fit in booster mode
Unique SuperLATCH™ system makes installation easy
Fits 3-across in most mid-size vehicles while providing spacious interior for child
Folds flat for travel and is FAA certified
Infant body support cushions and memory foam add comfort
Aluminum reinforced sides with energy absorbing EPS foam additional side impact protection
Safe Stop® energy absorbing harness
12-position adjustable headrest
5 shoulder and 3 buckle positions adjust for a comfortable ride.
Rear-facing tether capability
Expandable sides and long seat bottom offer proper leg support
Low-sitting profile makes it easy for your child to board
Angled cup holder keeps drinks upright and within easy reach
Cover is machine washable
Rubber bottom grips for no-slip installation
10 year life from the date of purchase
Our unique SuperLATCH™ system makes installation easy and secure. An audible click and visual indicator let you know when the connectors are locked.
Our patented Safe Stop® harness component is a load-limiting device that absorbs energy in a crash. The unique design offers an additional layer of protection by reducing impact to a smaller, forward-facing child.
Side Impact Protection
We’ve got your child’s safety covered. Radian® rXT seats feature deep, aluminum reinforced sidewalls that extend straight forward and are lined with thick, energy absorbing foam. We performed rigorous side impact testing to achieve the proper size, shape and strength that best protects children from side impact forces.
As safety experts, we think of every precaution. Rear-facing tether capability helps reduce seat rotation during an impact. This unique feature is not found on every car seat. We built it in here for an extra layer of protection when your child is rear-facing.
“No parent should ever have to turn and look in the backseat to see if their child is still alive, but if you ever do I hope you see what I saw. My child perfectly snug in her Diono car seat; she did not move an inch; her car seat did not move an inch; everything around her was broken, but she was perfect. She did not have a single scratch on her.”