Diono Radian 3R SafePlus™ All-in-One Convertible Car Seat | live price, prepared checkout
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Brand: Diono
- Black Jet: USD 298.99; out of stock. Variant id
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- Seller: megababiesusa.com. Price: USD 298.99. Stock: out of stock. Variant: Black Jet, variant id
- Blue Sky: USD 259.99; out of stock. Variant id
gid://shopify/ProductVariant/44090061259006- Seller: megababiesusa.com. Price: USD 259.99. Stock: out of stock. Variant: Blue Sky, variant id
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- Seller: megababiesusa.com. Price: USD 259.99. Stock: out of stock. Variant: Blue Sky, variant id
- Purple Plum: USD 259.99; out of stock. Variant id
gid://shopify/ProductVariant/44090061291774- Seller: megababiesusa.com. Price: USD 259.99. Stock: out of stock. Variant: Purple Plum, variant id
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- Seller: megababiesusa.com. Price: USD 259.99. Stock: out of stock. Variant: Purple Plum, variant id
- Blue Surge: USD 298.99; out of stock. Variant id
gid://shopify/ProductVariant/45681422663934- Seller: megababiesusa.com. Price: USD 298.99. Stock: out of stock. Variant: Blue Surge, variant id
gid://shopify/ProductVariant/45681422663934. shipping not recorded; confirmed at merchant checkout. returns not recorded; confirmed at merchant checkout. Public evidence. Get ready to buy from megababiesusa.com: prepare checkout.
- Seller: megababiesusa.com. Price: USD 298.99. Stock: out of stock. Variant: Blue Surge, variant id
- Blue Razz Ice: USD 298.99; out of stock. Variant id
gid://shopify/ProductVariant/45681422696702- Seller: megababiesusa.com. Price: USD 298.99. Stock: out of stock. Variant: Blue Razz Ice, variant id
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- Seller: megababiesusa.com. Price: USD 298.99. Stock: out of stock. Variant: Blue Razz Ice, variant id
- Pink Cotton Candy: USD 298.99; out of stock. Variant id
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- Seller: megababiesusa.com. Price: USD 298.99. Stock: out of stock. Variant: Pink Cotton Candy, variant id
- Purple Wildberry: USD 298.99; out of stock. Variant id
gid://shopify/ProductVariant/45681422762238- Seller: megababiesusa.com. Price: USD 298.99. Stock: out of stock. Variant: Purple Wildberry, variant id
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- Seller: megababiesusa.com. Price: USD 298.99. Stock: out of stock. Variant: Purple Wildberry, variant id
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. 54 checked facts, checked 2026-10-20T02:36:43.036Z. Research depth: trimmed read. Deep read: the store's own data and 9 outside pages (the store's own product page; recall notice; blog; regulator recall search (CPSC (United States)); regulator recall search (Health Canada); official safety test results (CREP, the Child Restraint Evaluation Program); official safety test results (NHTSA's Car Seat Ease of Use Ratings); video review (derived summary of its captions)), 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: Transport Canada recall RA-76660 (published 2024-11-25, last updated 2025-03-26) explicitly lists the Diono Radian 3R SafePlus for model years 2019-2024: rear-facing installs using the universal anchorage system may not meet Canadian requirements. Owners may keep using the seat rear-facing with the vehicle seat belt and can request a free remedy kit with a foam insert. A CPSC search returned no US recall for this seat. Health Canada's data lists 13 Diono records, but only this one notice was read in full; other records may concern other models. Official safety test results were looked up directly with CREP, the Child Restraint Evaluation Program, NHTSA's Car Seat Ease of Use Ratings: CREP, the Child Restraint Evaluation Program (Australia and New Zealand): CREP rates seats on crash protection stars and ease-of-use stars out of five. Its published list of 216 rated seats contains no Diono or Radian seat at all, and the list is the complete set of seats CREP has rated, so this seat has not been evaluated. NHTSA's Car Seat Ease of Use Ratings (United States): NHTSA rates ease of use, not crash protection, from 1 to 5 stars in four categories. Only other Diono Radian models appear: the Radian 3QX, 3QXT and 3QXT+, plus boosters under other names. The Radian 3R SafePlus itself is not listed, so no rating for it can be carried over from those variants. Not read, because they are member-only or refused RoboTrunk: Consumer Reports car seat ratings, Which? child car seat tests, JPMA certified products.
- weight: The seat weighs 29.3 lb.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- recall scope: Transport Canada recall RA-76660 lists the Diono Radian 3R SafePlus for model years 2019 through 2024, alongside other Radian models.. Source: https://recalls-rappels.canada.ca/en/alert-recall/transport-canada-recall-2024718-diono (guide), read 2026-10-20T02:25:36.253Z.
- what changed: The blog describes this as a new, upgraded Radian 3R with about a dozen changes covering safety features and comfort details.. Source: https://pishposhbaby.com/blogs/blog/radian-3r-safeplus-full-review (blog, Pish Posh Baby, published 2023-08-03), read 2026-10-20T02:25:39.357Z.
- US recall search: A CPSC recall search for Diono returned no recall records for this seat.. Source: https://www.saferproducts.gov/RestWebServices/Recall?format=json&Manufacturer=Diono (guide), read 2026-10-20T02:26:09.659Z.
- installation time: Installing it rear-facing took roughly 45 minutes, and getting the recline angle right needed repeated fiddling, especially without Diono's separate angle adjuster.. Source: https://www.youtube.com/watch?v=6_HLDKDEZvY (review), read 2026-10-20T02:27:02.812Z.
- installation: Setup was straightforward; the reviewer puts the heaviness down to sturdiness and found the seat solid once installed.. Source: https://www.youtube.com/watch?v=-5bJWZGfU0k (review), read 2026-10-20T02:27:02.817Z.
- dimensions open: Open, the seat measures 16 inches deep by 17 inches wide by 28.5 inches high.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- recall issue: The recalled seats may not meet Canadian rules when installed rear-facing with the universal anchorage system (UAS).. Source: https://recalls-rappels.canada.ca/en/alert-recall/transport-canada-recall-2024718-diono (guide), read 2026-10-20T02:25:36.253Z.
- modes: It presents the seat as moving from rear-facing to forward-facing to booster so it grows with the child.. Source: https://pishposhbaby.com/blogs/blog/radian-3r-safeplus-full-review (blog, Pish Posh Baby, published 2023-08-03), read 2026-10-20T02:25:39.357Z.
- installed stability: Once fitted the seat barely moves and feels like a permanent fixture rather than something that comes in and out.. Source: https://www.youtube.com/watch?v=6_HLDKDEZvY (review), read 2026-10-20T02:27:02.812Z.
- headrest: The one-hand, 12-position headrest was simple to use even with a wriggling toddler in the seat.. Source: https://www.youtube.com/watch?v=-5bJWZGfU0k (review), read 2026-10-20T02:27:02.817Z.
- dimensions folded: Folded, the seat measures 11.5 inches deep by 17 inches wide by 28.5 inches high.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- recall remedy: Diono advises that affected seats may continue to be used rear-facing when installed with the vehicle seat belt.. Source: https://recalls-rappels.canada.ca/en/alert-recall/transport-canada-recall-2024718-diono (guide), read 2026-10-20T02:25:36.253Z.
- slim fit: The slim shell is highlighted as making three-across installation practical for families with several children.. Source: https://pishposhbaby.com/blogs/blog/radian-3r-safeplus-full-review (blog, Pish Posh Baby, published 2023-08-03), read 2026-10-20T02:25:39.357Z.
- three across: Three of these seats fitted across the back seat of a midsize SUV, which the reviewer says almost never works with other seats in this class.. Source: https://www.youtube.com/watch?v=6_HLDKDEZvY (review), read 2026-10-20T02:27:02.812Z.
- space: Although it fits three across, it is bulkier than compact seats, so the reviewer advises measuring a tight back seat before buying.. Source: https://www.youtube.com/watch?v=-5bJWZGfU0k (review), read 2026-10-20T02:27:02.817Z.
- width and three across: The seat is 17 inches wide and is claimed to fit three across in most midsize vehicles.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- recall remedy kit: The free remedy kit contains a foam insert and fitting instructions.. Source: https://recalls-rappels.canada.ca/en/alert-recall/transport-canada-recall-2024718-diono (guide), read 2026-10-20T02:25:36.253Z.
- protection: It says the seat was engineered using European side-impact research for better head containment, with high-performance foam padding for comfort and protection.. Source: https://pishposhbaby.com/blogs/blog/radian-3r-safeplus-full-review (blog, Pish Posh Baby, published 2023-08-03), read 2026-10-20T02:25:39.357Z.
- loading and height: The seat sits lower than bulkier models, making it a bit harder to lift a toddler in and out in tighter vehicles.. Source: https://www.youtube.com/watch?v=6_HLDKDEZvY (review), read 2026-10-20T02:27:02.812Z.
- weight: The weight is called out as the main drawback for anyone who has to move the seat between vehicles regularly.. Source: https://www.youtube.com/watch?v=-5bJWZGfU0k (review), read 2026-10-20T02:27:02.817Z.
- rear-facing limits: The store lists a rear-facing range of 4–50 lb; Pish Posh Baby's blog says the rear-facing limit is 22.7 lb, so the sources disagree.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- crash testing: The blog says the seat went through roll-over and side-impact crash testing and has slots for an optional anti-rebound bar sold separately.. Source: https://pishposhbaby.com/blogs/blog/radian-3r-safeplus-full-review (blog, Pish Posh Baby, published 2023-08-03), read 2026-10-20T02:25:39.357Z.
- everyday use: The headrest adjusted easily one-handed and the harness tightened evenly during daily use.. Source: https://www.youtube.com/watch?v=6_HLDKDEZvY (review), read 2026-10-20T02:27:02.812Z.
- cup holder: This reviewer says there is no integrated cup holder, which conflicts with the store listing's steel-reinforced cup holder claim.. Source: https://www.youtube.com/watch?v=-5bJWZGfU0k (review), read 2026-10-20T02:27:02.817Z.
- forward-facing limits: Forward-facing with the harness is rated from 22 lb to 65 lb.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- rear-facing limit discrepancy: The blog quotes a rear-facing limit of about 22.7 lb, far below the 50 lb rear-facing limit given in the store data, so the stated limit should be checked before relying on it.. Source: https://pishposhbaby.com/blogs/blog/radian-3r-safeplus-full-review (blog, Pish Posh Baby, published 2023-08-03), read 2026-10-20T02:25:39.357Z.
- comfort: A toddler fell asleep within ten minutes on more than one ride, which the reviewer takes as the padding doing its job.. Source: https://www.youtube.com/watch?v=6_HLDKDEZvY (review), read 2026-10-20T02:27:02.812Z.
- everyday performance: The seat behaved as advertised in daily use, and the steel frame and SafePlus layers gave the reviewer confidence.. Source: https://www.youtube.com/watch?v=-5bJWZGfU0k (review), read 2026-10-20T02:27:02.817Z.
- booster limits: Booster mode is rated from 40 lb to 120 lb.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- build quality: Materials and frame feel heavy-duty and durable; no build complaints were reported.. Source: https://www.youtube.com/watch?v=6_HLDKDEZvY (review), read 2026-10-20T02:27:02.812Z.
- customer support: The reviewer did not contact Diono but reports a general reputation for responsive support based on other owners' accounts.. Source: https://www.youtube.com/watch?v=-5bJWZGfU0k (review), read 2026-10-20T02:27:02.817Z.
- overall limits: The seat covers children from 4 lb to 120 lb and up to 57 inches tall.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- weight in use: The seat is heavy enough that swapping it between cars casually is not realistic.. Source: https://www.youtube.com/watch?v=6_HLDKDEZvY (review), read 2026-10-20T02:27:02.812Z.
- maximum height: Maximum child height is 57 inches.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- fabric breathability: The cover felt less breathable than higher-end fabrics tested and may run warm in summer.. Source: https://www.youtube.com/watch?v=6_HLDKDEZvY (review), read 2026-10-20T02:27:02.812Z.
- warranty: Standard warranty is 12 months, extended to 36 months when the seat is registered with Diono after purchase.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- instruction manual: The manual is detailed but not beginner-friendly, which is why the first install took so long.. Source: https://www.youtube.com/watch?v=6_HLDKDEZvY (review), read 2026-10-20T02:27:02.812Z.
- care: The seat cover can be machine washed and must be line dried.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- travel: Despite folding, it is not a light travel seat; the fold mainly helps with compact storage.. Source: https://www.youtube.com/watch?v=6_HLDKDEZvY (review), read 2026-10-20T02:27:02.812Z.
- aircraft use: The seat is FAA-approved and certified for aircraft use.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- comparison: Against the Graco Forever DLX it felt sturdier and more compact for tight fits, but the Graco was easier to install.. Source: https://www.youtube.com/watch?v=6_HLDKDEZvY (review), read 2026-10-20T02:27:02.812Z.
- anti-rebound bar: The seat has slots for an anti-rebound bar, but the bar itself is sold separately.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- comparison: Against a Britax seat it trades some plushness and user-friendliness for a narrower footprint and better travel compatibility.. Source: https://www.youtube.com/watch?v=6_HLDKDEZvY (review), read 2026-10-20T02:27:02.812Z.
- installation hardware: It uses the Easy-Click SuperLATCH system for lower-anchor installation.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- value: The reviewer sees fair value because it replaces several seats over a long usable life, and rates the extended rear-facing and folding design as genuinely useful rather than gimmicks.. Source: https://www.youtube.com/watch?v=6_HLDKDEZvY (review), read 2026-10-20T02:27:02.812Z.
- structure: The seat is built on a SafePlus steel core.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- side impact: It has energy-absorbing side impact protection with extended side walls intended to reduce side-crash impact.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- headrest: The seat has an easy-adjust, 12-position headrest.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- cup holder: The store lists a steel-reinforced cup holder, while one video reviewer reports no integrated cup holder; the sources disagree.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- folding: The seat folds for travel and compact storage.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- modes and lifespan: It is sold as a 4-modes-in-1 seat with up to 10 years of use.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- lifespan: Diono presents the seat as covering up to 10 years of use with 12 SafePlus upgrades.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
- side impact layers: Diono describes the shell as providing 6-layer side impact protection while staying slim.. Source: https://top-stroll.myshopify.com/products.json (listing), read 2026-10-19T19:20:38.895Z.
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, blogs, video reviews, the recall records of CPSC (United States) and Health Canada and the safety test results of CREP, the Child Restraint Evaluation Program and NHTSA's Car Seat Ease of Use Ratings and searched for the maker's page, the manual, owner reviews and owner forums. 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 rear-facing height limits for this seat?
- What are the harness slot heights at each stage?
- Does the seat have an expiry or use-by date?
- Is the anti-rebound bar recommended or required for rear-facing use?
- How much does the seat weigh in each mode of use?
- What is the lower-anchor (UAS or LATCH) weight limit for rear-facing?
- What is the fabric composition of the seat cover?
- How many recline positions does the seat have in each mode?
- Can the harness straps and buckle be washed, and how?
- Will it fit three across in a compact car, not just a midsize SUV?
- Does the seat come with a travel bag or carry strap?
- Which safety standards or certifications does the seat carry in the US and Canada?
Recall notice
This listing matches a model named in a regulator's notice, as the index stood on 2026-09-25.
- Health Canada and Transport Canada, 2024-11-25: Transport Canada Recall - 2024718 - DIONO (recall). The notice may cover only some serial numbers or dates of manufacture, which this listing does not show.
This listing is the brand and model a regulator's notice names. Two AI models judged it so independently. It does not mean the unit on sale is from an affected batch, that the store knew, or that the product is illegal where the store sells it; a US recall does not bind an Australian store. The notice may cover only some serial numbers or dates of manufacture, which a listing does not show. RoboTrunk never limits or blocks a purchase over a notice; read the notice and decide.
To buy this through RoboTrunk, pass merchant megababiesusa-com, product_id gid://shopify/Product/8077560316158 and one variant_id from the list above.
Product image of Diono Radian 3R SafePlus™ All-in-One Convertible Car Seat, supplied by megababiesusa.com: https://cdn.shopify.com/s/files/1/0012/1520/1341/files/156214_source_1712227704.png?v=1722445728
This product on megababiesusa.com
Retrieved 2026-10-24T19:31:58.346Z from https://top-stroll.myshopify.com/products.json
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