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

by Diono
3 reviews Write a review
Sold out

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

by Diono
3 reviews Write a review
Sold out

Call to order: 888-677-5583

Product Details
You’ll only ever need one car seat: this car seat! Allowing a child to use this seat from birth to 120 pounds, this lifespan seems too good to be true! The 2020 radian® 3RXT is fabricated using super strong automotive high-strength steel, engineered into a dual spine. This unique core manages and dissipates energy and provides an unyielding structure to protect your baby. It shields your precious child through super side impact protection with aluminum reinforcement. Get peace of mind with this seat! Have multiple children? Fit three across in most cars to get the most out of your seat for it's 10 year life span!

Why Parents Love the Diono Radian 3RXT

  • It’s the only car seat you’ll need for your child from birth to 120 pounds
  • Easy installation
  • Professionally and safely made
  • Folds flat

Why Children Love the Diono Radian 3RXT

  • Low-sitting profile helps them climb in easily on their own
  • Comfortable
  • Can be used up to 120 pounds


  • All-in-one convertible car seat
  • Unmatched safety from steel frame
  • Easy installation
  • Folds flat
  • Additional side-impact protection
  • Safe Stop energy-absorbing harness
  • 5 shoulder and 3 buckle positions
  • Long seat bottom and expandable sides
  • Rubber bottom grips for no-slip installation
  • 1 recline position for the rear-facing position and 2 recline positions for the forward-facing position
  • Approved for use on an aircraft
  • 10-year lifespan
  • FAA certified

Installation Options

  • SuperLATCH system
  • Rear-facing Tether LATCH option
  • Seatbelt Installation

Weight Capacity

  • Rear-facing: 5-50 lbs and whose height is 44 inches or less.
  • Forward-facing: 22-65 lbs and whose height is 57 inches or less.
  • Booster Use: 40-120 lbs. and whose height is 57 inches or less

Weight and Dimensions

  • 23 lbs.
  • Seat height: 28.5”
  • Seat width: 15”
  • Seat pan depth: 13”
  • Exterior shoulder width: 17”
  • Interior shoulder width: 13”
  • Harness strap positions: 17”, 14.25”, 11.5”, 9.75”, and 8.25”
  • Crotch buckle positions: 4”, 6”, and 7.5”
  • Can fit three across in most mid-sized vehicles


  • Soft fabric covers
  • Memory foam seat base bottom
  • Lined with thick absorbing foam
  • Machine washable cover
  • Line or air dry cover
  • All other parts are to be wiped with damp cloth with warm water
  • Towel dry
Shipping & Returns

Free Shipping

Free Shipping applies to standard shipping orders over $25 within the continental U.S.A. Unfortunately, orders shipping to Alaska, Hawaii, Puerto Rico, or APO/FPO addresses do not qualify for free shipping.
Large furniture items that must ship as freight such as cribs, gliders and dressers have a separate furniture delivery fee.

Shipping Rates

Free 5-7 days shipping is available on every order over $25 (excluding taxes and shipping fees) in the continental U.S.A. If you are in need of expedited shipping, the cost will be dependent upon your area and how fast you are wanting it shipped to you. You can get a shipping quote in your cart at checkout.

Shipping Timeline

For standard shipping, FedEx and USPS have up to 5-7 business days to deliver your order. However, most items arrive within 3-5 business days.

To track your package, follow one of the links below:

United States Postal Service (USPS) Tracking:

FedEx Tracking: