Diono Radian 3RXT Safe + Booster Seat | 2 sellers, live prices, prepared checkout

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Checked facts

Each fact below was checked against the source it cites before it was published. Each carries that source's link and the time RoboTrunk read it. 26 checked facts, checked 2026-09-25T04:53:09.731Z. Research depth: trimmed read. Deep read: the store's own data and 6 outside pages (the store's own product page; recall notice; review; regulator recall search (CPSC (United States)); regulator recall search (Health Canada); regulator recall search (ACCC Product Safety Australia)), each read in full by RoboTrunk and trimmed to its main content, then written up and checked. Facts from the maker or a manual quote the page word for word; what real users report is summarised with a link to the page read. Recall status was checked directly with CPSC (United States), Health Canada, ACCC Product Safety Australia: Transport Canada recall 2024-718 explicitly covers Canadian Radian 3RXT SafePlus model years 2019–2024 for rear-facing UAS noncompliance. Owners should check the seat's model year and identifiers with Diono, use the vehicle belt rear-facing as directed, and request the free remedy kit if affected. The supplied U.S. CPSC search returned no record. The supplied Australian feed covered only the 100 most recent recalls and cannot exclude older notices. Canadian search data also lists later Diono recalls from 2025 and 2026, but the supplied summaries do not identify their models, so their relevance

• Structure and materials: The seat has a reinforced core made from automotive-grade high-strength steel.. Source: https://anb-baby.myshopify.com/products.json (listing), read 2026-09-24T19:02:00.790Z.
• Mode limits: Rear-facing use is rated for 4–50 lb and up to 44 inches; forward-facing for 22–65 lb; booster use for 40–120 lb and up to 57.1 inches.. Source: https://anb-baby.myshopify.com/products/diono-radian-3rxt-safe-booster-seat (guide), read 2026-09-25T04:37:49.761Z.
• Canadian recall scope: Transport Canada recall 2024-718 includes Radian 3RXT SafePlus model years 2019 through 2024.. Source: https://recalls-rappels.canada.ca/en/alert-recall/transport-canada-recall-2024718-diono (guide), read 2026-09-25T04:37:56.461Z.
• Measured size and weight: Independent testing measured the seat at 17.2 inches at its widest point and 26.5 lb. Its narrow body helps with tight rows, but the weight makes airport carrying unattractive despite the folding design.. Source: https://www.babygearlab.com/reviews/vehicle-safety/convertible-car-seat/diono-radian-3rxt-safe-plus (review), read 2026-09-25T04:38:03.078Z.
• Side-impact protection: It is described as having six layers of side-impact protection.. Source: https://anb-baby.myshopify.com/products.json (listing), read 2026-09-24T19:02:00.790Z.
• Newborn minimum: The store FAQ says newborn protection begins at 5 lb, although the same page's structured description says rear-facing starts at 4 lb.. Source: https://anb-baby.myshopify.com/products/diono-radian-3rxt-safe-booster-seat (guide), read 2026-09-25T04:37:49.761Z.
• Recall defect: Affected seats may fail Canadian requirements when rear-facing and installed with UAS.. Source: https://recalls-rappels.canada.ca/en/alert-recall/transport-canada-recall-2024718-diono (guide), read 2026-09-25T04:37:56.461Z.
• Installation difficulty: Testers found both LATCH and vehicle-belt installation unusually difficult. They cited no level indicator, color coding or conventional lock-off; narrow and poorly visible belt paths; straps catching or rubbing; and difficulty getting the seat tight enough to pass their wiggle test. Fit and stability varied between test vehicles, and larger hands made access harder.. Source: https://www.babygearlab.com/reviews/vehicle-safety/convertible-car-seat/diono-radian-3rxt-safe-plus (review), read 2026-09-25T04:38:03.078Z.
• Headrest: The headrest has 12 positions and can be adjusted with one hand.. Source: https://anb-baby.myshopify.com/products.json (listing), read 2026-09-24T19:02:00.790Z.
• Three-across fit: The store says three seats can fit across in a vehicle row at least 51 inches wide; this is not a guarantee for every vehicle shape or seating configuration.. Source: https://anb-baby.myshopify.com/products/diono-radian-3rxt-safe-booster-seat (guide), read 2026-09-25T04:37:49.761Z.
• Recall safety risk: Transport Canada warns that noncompliance could increase injury risk in a crash.. Source: https://recalls-rappels.canada.ca/en/alert-recall/transport-canada-recall-2024718-diono (guide), read 2026-09-25T04:37:56.461Z.
• Installation effort and parts: Forward-facing setup required repeated manual checks, changing the seat-bottom position for the child's weight and remembering the separate Safe Stop component. Testers needed substantial force, including kneeling in the seat, to tighten it and worried the removable part could be lost.. Source: https://www.babygearlab.com/reviews/vehicle-safety/convertible-car-seat/diono-radian-3rxt-safe-plus (review), read 2026-09-25T04:38:03.078Z.
• Care: The shell and other components may be spot cleaned.. Source: https://anb-baby.myshopify.com/products.json (listing), read 2026-09-24T19:02:00.790Z.
• Anti-rebound bar: The steel anti-rebound bar is claimed to reduce rearward rotation by up to 50% during a collision.. Source: https://anb-baby.myshopify.com/products/diono-radian-3rxt-safe-booster-seat (guide), read 2026-09-25T04:37:49.761Z.
• Recall remedy: For affected seats, Diono says rear-facing use may continue with vehicle-belt installation, and owners should obtain a free foam-insert remedy kit.. Source: https://recalls-rappels.canada.ca/en/alert-recall/transport-canada-recall-2024718-diono (guide), read 2026-09-25T04:37:56.461Z.
• Harness and buckle: The buckle, chest clip and harness tightening operated smoothly and were easy to use. However, changing harness height requires rethreading through five positions, and moving the three-position crotch buckle is awkward and may be impossible for large hands.. Source: https://www.babygearlab.com/reviews/vehicle-safety/convertible-car-seat/diono-radian-3rxt-safe-plus (review), read 2026-09-25T04:38:03.078Z.
• Travel and storage: The seat folds flat for compact storage and is described as FAA-approved for air travel.. Source: https://anb-baby.myshopify.com/products/diono-radian-3rxt-safe-booster-seat (guide), read 2026-09-25T04:37:49.761Z.
• Recall remedy kit: The free remedy kit contains a foam insert and installation instructions.. Source: https://recalls-rappels.canada.ca/en/alert-recall/transport-canada-recall-2024718-diono (guide), read 2026-09-25T04:37:56.461Z.
• Touch and padding: The headrest fabric felt cooling and relatively pleasant, but other fabric areas and the infant insert felt rough. Padding was judged average in thickness and density, with minimal side cushioning and compact memory-foam-style padding at the base; testers wanted a softer, more padded newborn area.. Source: https://www.babygearlab.com/reviews/vehicle-safety/convertible-car-seat/diono-radian-3rxt-safe-plus (review), read 2026-09-25T04:38:03.078Z.
• Included infant support: The newborn setup includes a 2-in-1 infant positioning liner and a high wedge.. Source: https://anb-baby.myshopify.com/products/diono-radian-3rxt-safe-booster-seat (guide), read 2026-09-25T04:37:49.761Z.
• Cleaning and storage: Removing the cover was much more complicated than on competing seats: testers needed a pen to reach a pull tab and had to rethread the harness for removal and refitting. The LATCH storage cubby was also awkward and tight, although the relatively simple shell offers fewer large mess traps.. Source: https://www.babygearlab.com/reviews/vehicle-safety/convertible-car-seat/diono-radian-3rxt-safe-plus (review), read 2026-09-25T04:38:03.078Z.
• Cup holder: A removable, dishwasher-safe cup holder is included and attaches to the seat.. Source: https://anb-baby.myshopify.com/products/diono-radian-3rxt-safe-booster-seat (guide), read 2026-09-25T04:37:49.761Z.
• Independent crash testing: The seat met federal guidelines, but this review's commissioned testing recorded comparatively high head and chest sensor forces and produced one of the group's lowest crash-test analysis scores. This is an independent comparative result, not a regulatory failure finding.. Source: https://www.babygearlab.com/reviews/vehicle-safety/convertible-car-seat/diono-radian-3rxt-safe-plus (review), read 2026-09-25T04:38:03.078Z.
• Care: Machine-wash the covers on a cold cycle and line dry them.. Source: https://anb-baby.myshopify.com/products/diono-radian-3rxt-safe-booster-seat (guide), read 2026-09-25T04:37:49.761Z.
• Durability evidence: The review criticized perceived comfort and overall quality but did not report a recurring broken component, coating failure or paint rubbing off.. Source: https://www.babygearlab.com/reviews/vehicle-safety/convertible-car-seat/diono-radian-3rxt-safe-plus (review), read 2026-09-25T04:38:03.078Z.
• Service life: The store states a 10-year lifespan measured from purchase date.. Source: https://anb-baby.myshopify.com/products/diono-radian-3rxt-safe-booster-seat (guide), read 2026-09-25T04:37:49.761Z.

The full evidence pack, with every citation, source and gap.

Questions we researched but could not confirm

Every fact above is cited. To find them we read the store listing, a regulator's recall notice, owner reviews and the recall records of CPSC (United States), Health Canada and ACCC Product Safety Australia. We also chased the questions below across those sources and found no reliable answer, so you know exactly where the evidence ends and never have to guess.

• What are the seat's complete external dimensions when open and folded?
• Will it install securely in my exact vehicle, seating position and upholstery?
• What are the forward-facing height limit and minimum booster height?
• What child age ranges does Diono specify for each mode?
• Which tools, if any, does Diono require for installation and adjustment?
• What fabric and foam materials are used?
• Are added flame-retardant chemicals used?
• Does any paint or coating rub off with normal use?
• What warranty coverage and exclusions apply?
• Which exact manufacture dates and serial numbers are covered by the Canadian recall?
• Do the 2025 or 2026 Canadian Diono recall entries cover this model?
• What formal safety standards and certifications apply besides FAA approval?
• Is the FAA approval limited to harness modes rather than booster mode?
• Are the anti-rebound bar and side-impact pods included with every variant?
• What are the required vehicle-belt, UAS and top-tether limits for each mode?

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