--- product_id: 537626160 title: "Diono Radian 3RXT Special Edition Slim Fit 3 Across All-in-One Convertible Car Seat, Rear-Facing, Forward-Facing and High-Back Booster, Gray Oyster" brand: "diono" price: "€ 101.32" currency: EUR in_stock: true reviews_count: 3 url: https://www.desertcart.hr/products/537626160-diono-radian-3rxt-special-edition-slim-fit-3-across-all store_origin: HR region: Croatia --- # Grows with your child (5-120 lbs) Mechanically Engineered Steel Core Slim fit for 3-across option Diono Radian 3RXT Special Edition Slim Fit 3 Across All-in-One Convertible Car Seat, Rear-Facing, Forward-Facing and High-Back Booster, Gray Oyster **Brand:** diono **Price:** € 101.32 **Availability:** ✅ In Stock ## Summary > 🚀 Elevate your travel game with the Diono Radian 3RXT! ## Quick Answers - **What is this?** Diono Radian 3RXT Special Edition Slim Fit 3 Across All-in-One Convertible Car Seat, Rear-Facing, Forward-Facing and High-Back Booster, Gray Oyster by diono - **How much does it cost?** € 101.32 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/537626160-diono-radian-3rxt-special-edition-slim-fit-3-across-all) ## 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 - • **Safety First:** Engineered with a steel core for maximum security. - • **Versatile Design:** Easily transitions from rear-facing to booster mode. - • **Long-Term Investment:** Supports your child from 5 to 120 pounds for up to 10 years. - • **Space-Saving Innovation:** Slim design allows for 3-across seating in most vehicles. - • **Comfort Meets Convenience:** 12-position adjustable headrest for a perfect fit. ## Overview The Diono Radian 3RXT Special Edition is a versatile all-in-one convertible car seat designed for children from 5 to 120 pounds. With its innovative slim-fit design, it allows for three car seats across in most vehicles, ensuring safety and comfort. The car seat features a steel core for enhanced security, an adjustable headrest for personalized comfort, and supports multiple modes of use, making it a long-lasting investment for families. ## Description Provide yourself with the assurance that your kiddos will be safe during car travel, and outfit your vehicle with the Diono Radian 3RXT Special Edition Slim Fit 3 Across All-In-One Convertible Car Seat, where safety meets style, and versatility meets peace of mind. This ultimate car seat will grow with your baby so that you only need to rely on 1 safety seat for up to 10 years of your child's life. Allowing for newborn rear-facing, forward-facing harnesses, and high-back booster mode, your children are safe for years to come. Designed for rear-facing travel for 5 to 50 pounds, you can keep your child safe while the steel bar reduces rebound rotation for extended rear-facing trips. Safety starts within. This convertible car seat is mechanically engineered, reinforced steel core made from high-strength automotive-grade steel that will shield and protect during travel. Built with the famous Radian slim-fit design for a 3-cross option to not compromise child or passenger safety and comfort. Stay fresh with easy removal and machine-washable covers. Featuring a 1 hand, easy-adjust 12-position headrest, you can secure your child in style and safety with the Radian 3RXT Special Edition Slim Fit 3 Across All-In-One Convertible Car Seat from Diono because your child deserves nothing but the best. ## Technical Specifications | Specification | Value | |---------------|-------| | Product Dimensions | 16 x 17 x 28.5 inches | | Minimum weight recommendation | 5 Pounds | | Maximum weight recommendation | 120 Pounds, 50 Pounds, 65 Pounds | | Maximum height recommendation | 28.5 Inches | | Orientation | Forward Facing | | Rear-facing minimum child weight | 5 Pounds | | Harness type | 5-Point | ## Product Details - **Brand:** Diono - **Installation Type:** Latch - **Orientation:** Forward Facing - **Maximum Weight Recommendation:** 120 Pounds, 50 Pounds, 65 Pounds - **Harness Type:** 5-Point ## Images ![Diono Radian 3RXT Special Edition Slim Fit 3 Across All-in-One Convertible Car Seat, Rear-Facing, Forward-Facing and High-Back Booster, Gray Oyster - Image 1](https://m.media-amazon.com/images/I/71RzJZq4FWL.jpg) ![Diono Radian 3RXT Special Edition Slim Fit 3 Across All-in-One Convertible Car Seat, Rear-Facing, Forward-Facing and High-Back Booster, Gray Oyster - Image 2](https://m.media-amazon.com/images/I/61k46yAZ5yL.jpg) ![Diono Radian 3RXT Special Edition Slim Fit 3 Across All-in-One Convertible Car Seat, Rear-Facing, Forward-Facing and High-Back Booster, Gray Oyster - Image 3](https://m.media-amazon.com/images/I/71BovPVRL8L.jpg) ![Diono Radian 3RXT Special Edition Slim Fit 3 Across All-in-One Convertible Car Seat, Rear-Facing, Forward-Facing and High-Back Booster, Gray Oyster - Image 4](https://m.media-amazon.com/images/I/71W2E-FnXxL.jpg) ![Diono Radian 3RXT Special Edition Slim Fit 3 Across All-in-One Convertible Car Seat, Rear-Facing, Forward-Facing and High-Back Booster, Gray Oyster - Image 5](https://m.media-amazon.com/images/I/71n4ilVcWqL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ CAR SEATS *by R***S on August 11, 2025* We have purchased and still use 2 of these car seats for our children and we love them. They are sturdy, durable and easy to clean. ### ⭐⭐⭐⭐⭐ Perfect for parents of a lot of kids on the go! *by E***C on March 17, 2024* I can fit two of these and a removable newborn carseat in the same row! The slim design makes mommin' on the go so much easier. ### ⭐⭐⭐ Quite heavy and challenging to clean but compact and sturdy *by C***C on April 9, 2024* The RTX seats are very heavy. While they can fold up to be FAA compliant the weight makes it difficult to imagine doing this too often. I also found the seat challenging to clean (for example, foam pad in seat gets very dirty and will totally disintegrate if you clean too rigorously). The seat does feel safe. I am able to get it very sturdy in our cars (has fit in even the very small Honda Fit). The main pull strap is difficult to adjust in rear facing position and already starting to fray so I worry the quality is just not there. ## Frequently Bought Together - Diono Radian 3RXT Special Edition Slim Fit 3 Across All-in-One Convertible Car Seat, Rear-Facing, Forward-Facing and High-Back Booster, Gray Oyster - Diono Angle Adjuster Car Seat Leveler, Car Seat Wedge Cushion, Foam Provides More Legroom for Rear-Facing Car Seats - Diono Radian 3R, 3-in-1 Convertible Car Seat, Rear Facing & Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Jet Black --- ## 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.hr/products/537626160-diono-radian-3rxt-special-edition-slim-fit-3-across-all](https://www.desertcart.hr/products/537626160-diono-radian-3rxt-special-edition-slim-fit-3-across-all) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-05*