From the Radian 3RXT Safe+ Collection. The original three across all-in-one car seat is upgraded with 18 improvements, the Diono Radian 3RXT safe+ features Diono safe+ engineering, safe+ anti-rebound panel, and advanced safe+ side impact protection. Steel/plastic Fabric: polyester Spot clean Imported SPECIFICATIONS 17" W x 28.5" H x 16" D. Children's Wear - Gear & Nursery > Diono > Saks Fifth Avenue > Barneys. Diono. Color: Black Jet.