--- product_id: 355131007 title: "Diono Radian 3R, 3-in-1 Convertible Rear & Forward Facing Convertible Car Seat, High-Back Booster, 10 Years 1 Car Seat, Slim Design - Fits 3 Across, Gray Slate" brand: "diono" price: "$2518.25" currency: USD in_stock: false reviews_count: 5 url: https://www.desertcart.us/products/355131007-diono-radian-3r-3-in-1-convertible-rear-and-forward store_origin: US region: United States of America --- # Rear-facing up to 50 lbs Steel core safety shield Fits 3 across slim design Diono Radian 3R, 3-in-1 Convertible Rear & Forward Facing Convertible Car Seat, High-Back Booster, 10 Years 1 Car Seat, Slim Design - Fits 3 Across, Gray Slate **Brand:** diono **Price:** $2518.25 **Availability:** ❌ Out of Stock ## Summary > 🚗 Safety, style, and space—because your family deserves the best ride. ## Quick Answers - **What is this?** Diono Radian 3R, 3-in-1 Convertible Rear & Forward Facing Convertible Car Seat, High-Back Booster, 10 Years 1 Car Seat, Slim Design - Fits 3 Across, Gray Slate by diono - **How much does it cost?** $2518.25 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/355131007-diono-radian-3r-3-in-1-convertible-rear-and-forward) ## Best For - diono enthusiasts ## Why This Product - Trusted diono brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Slim Fit Design:** Fits 3 car seats across most vehicles without sacrificing comfort or safety. - • **Easy-Clean Covers:** Machine-washable, removable covers for hassle-free maintenance on the go. - • **10 Years, 1 Car Seat:** Grows with your child from newborn to 120 lbs—ultimate longevity and value. - • **Reinforced Steel Core:** Automotive-grade steel frame engineered for maximum impact protection. - • **Rear-Facing for Longer:** Keeps your little one rear-facing safely up to 50 lbs, extending critical protection. ## Overview The Diono Radian 3R is a versatile 3-in-1 convertible car seat designed to grow with your child from birth up to 120 lbs. Featuring a slim profile that fits three seats across most vehicles, it offers extended rear-facing safety up to 50 lbs, a reinforced steel core for superior protection, and easy-to-remove, machine-washable covers for convenience. Engineered for durability and comfort, it’s the only car seat you’ll need for a decade. ## Description 10 YEARS 1 CAR SEAT: With 4 ways to travel from birth to booster, the Radian 3R adapts as your child grows to offer a custom fit from birth up to 120 lbs THE ORIGINAL 3 ACROSS - Built with our famous Radian slim fit design, to fit 3 across in most vehicles without compromising child or passenger comfort REAR-FACING FOR LONGER: Designed and engineered to keep your child rear-facing even longer up to 50 lbs. (approx. 4 years old) STEEL CORE: Mechanically engineered, reinforced steel core, made from automotive grade high strength steel to shield and protect EASY REMOVE COVERS: Radian 3R features easy remove covers. So when the next journey gets messy, quickly remove the covers to machine wash and dry Review: Excelente tamaño y seguridad - La mejor silla si tienes una familia de 3 niños caben perfectamente 3 sillas en la parte trasera del coche Review: Buen asiento - Ocupas ser un Ingeniero Aeronautico o automotriz para Instalarlo. Es demasiado Dificil su instalación. Pero brinda buena protección al BB ## Features - 10 YEARS 1 CAR SEAT: With 4 ways to travel from birth to booster, the Radian 3R adapts as your child grows to offer a custom fit from birth up to 120 lbs - THE ORIGINAL 3 ACROSS - Built with our famous Radian slim fit design, to fit 3 across in most vehicles without compromising child or passenger comfort - REAR-FACING FOR LONGER: Designed and engineered to keep your child rear-facing even longer up to 50 lbs. (approx. 4 years old) - STEEL CORE: Mechanically engineered, reinforced steel core, made from automotive grade high strength steel to shield and protect - EASY REMOVE COVERS: Radian 3R features easy remove covers. So when the next journey gets messy, quickly remove the covers to machine wash and dry ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B083F8PVGJ | | Age Range Description | 4 years | | Brand | Diono | | Colour | Gray Slate | | Customer Reviews | 4.7 out of 5 stars 7,611 Reviews | | Global Trade Identification Number | 00677726506255 | | Installation Type | Seat Belt | | Item Weight | 23.37 Pounds | | Manufacturer | Diono | | Manufacturer Part Number | 50625 | | Material | Alloy Steel | | Maximum Weight Recommendation | 54.43 kg | | Minimum Weight Recommendation | 5 Pounds | | Model Number | 50625 | | Orientation | Forward Facing, Rear Facing | | Rear Facing Maximum Weight | 50 Pounds | | UPC | 677726506255 677726506217 | ## Product Details - **Brand:** Diono - **Installation Type:** Seat Belt - **Material:** Alloy Steel - **Colour:** Gray Slate - **Orientation:** Forward Facing, Rear Facing - **Item Weight:** 10.6 kg - **Maximum Weight Recommendation:** 120 Pounds - **Minimum Weight Recommendation:** 2.27 kg - **Age Range (Description):** 4 years - **Rear Facing Maximum Weight:** 50 Pounds ## Images ![Diono Radian 3R, 3-in-1 Convertible Rear & Forward Facing Convertible Car Seat, High-Back Booster, 10 Years 1 Car Seat, Slim Design - Fits 3 Across, Gray Slate - Image 1](https://m.media-amazon.com/images/I/71UrXev5hqL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: Can the Radian be rear-facing and still give a tall driver (6 ft) enough room? Or will it fit in the middle without hitting the driver's seat? Mazda3.** A: Place it behind the passenger side, if you’re shorter. It you’re 6’ tall, it will be too crowded. You may try it in the middle, but it may still affect the front passengers. **Q: How deep does the vehicle seat have to be for rear facing and for forward facing?** A: This seat is hard to install properly while rear facing because of its height. The angle of the seat has a lot to do with it. We have a rav4 and a Prius the Prius actually fit better because of the streeper seating angle. They sell a foam angle adjuster that does pretty well in the rav4, but if I was much taller (I'm 5'9") it'd be a tight squeeze up front (the car seat is not supposed to touch the seat in front of it.) These are very well made though and much higher quality than many other seats in the same price range. Plus you can fit 3 across in every vehicle. I'd recommend to anyone. **Q: Fecha de vencimiento?** A: We ship using UPS ground and normally the item goes out either same day or next day. **Q: How do I secure on in the middle seat in the back (3 seats across ans forward facing) if I don’t have latch in the middle seat?** A: If you are unable to attach the seat with the latch system you can secure it with the vehicles seatbelt. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excelente tamaño y seguridad *by E***I on 25 September 2025* La mejor silla si tienes una familia de 3 niños caben perfectamente 3 sillas en la parte trasera del coche ### ⭐⭐⭐⭐ Buen asiento *by L***T on 28 July 2024* Ocupas ser un Ingeniero Aeronautico o automotriz para Instalarlo. Es demasiado Dificil su instalación. Pero brinda buena protección al BB ### ⭐⭐⭐⭐⭐ Great carseat and worth the money. *by H***R on 15 December 2019* I like how narrow this seat is. Great to use with other carseats in a vehicle. ## Frequently Bought Together - Diono Radian 3R, 3-in-1 Convertible Car Seat, Rear Facing & Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Gray Slate - Diono XL Car Seat Cup Holders for Radian and Everett Car Seats, Pack of 2 Cup Holders, Black - Diono Ultra Mat Complete Back Seat Upholstery Protection from Child Car Seats and Pets, Crash Tested, Premium Ultra Thick Padding, Durable, Water Resistant, Anti-Slip, 3 Mesh Storage Pockets --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/355131007-diono-radian-3r-3-in-1-convertible-rear-and-forward](https://www.desertcart.us/products/355131007-diono-radian-3r-3-in-1-convertible-rear-and-forward) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-06-23*