DIONO

Diono: The Original 3-Across Car Seat

Born in Seattle, Diono (formerly Sunshine Kids) revolutionized the car seat industry with a simple idea: safety shouldn't compromise space. They created the first steel-core convertible car seat that could fit three across in a standard back seat. At baby enRoute, Diono is our top recommendation for growing families who need to maximize space without sacrificing safety or comfort.

Why Parents Trust Diono

Diono seats are built like tanks but fold like travel gear. Their unique steel alloy frame provides unmatched structural integrity, while their slim profile solves the "car puzzle" for parents with multiple children. They are also one of the few brands that offer extended rear-facing capabilities and high weight limits for harnessing, keeping kids safer for longer.

Explore the Collection

The Radian® Series: Slim & Safe

The Radian (3R, 3RXT, 3QXT) is the icon of the brand.

• All-in-One Design: Designed to grow from birth (with infant insert) to booster (up to 120 lbs), it's the only seat you'll ever need.
• Full Steel Core: A mechanically engineered steel frame acts as the spine of the seat, managing crash energy effectively.
• Travel Ready: The Radian is one of the only convertible seats that folds flat for easy transport or gate checking at the airport.

The Rainier & Monterey Series

For those who have a bit more space, the Rainier offers deeper side walls for enhanced side-impact protection. When it's time to graduate to a booster, the Monterey high-back booster features expandable sides and height to fit growing children up to 63 inches tall.

Extended Rear-Facing

Diono champions the "rear-facing is safest" philosophy. Their seats allow children to remain rear-facing up to 50 lbs (depending on the model), well beyond the industry standard, protecting their developing neck and spine.

Frequently Asked Questions