Investing in a multi-stage car seat

For baby and beyond

Is a multi-stage car seat right for you?

Whether you are purchasing an infant car seat, a multi-stage combination car seat or a booster seat for an older child, you are probably looking at the same basic criteria. Safety, comfort, quality, installation and height and weight limits. In accordance with current standards, children must remain in some form of safety seat until they are 8, 10, even 12 years old. Buying a multi-stage car seat rather than an infant carrier and Group 1/2 seat may be the most economical choice depending on your lifestyle and vehicle.

Want the Best? Here’s What to Look For…
– Safety ratings
– Materials used to make the seat
– Height & weight limits
– Functionality
– Customer reviews
– Compatibility with your vehicle

Multi-Stage Design Accommodates Growing Children and Growing Families

Covering Group 0, 0+, 1 and 2 Diono’s Radian 5 can be adapted to your child as they grow, keeping their car rides safe and comfortable for years. Expandable sides and extendable headrest ensure the right fit for your child as they reach each milestone and provides additional side impact protection. Thanks to its exceptionally slim profile, the Radian 5 can fit three across in some vehicles. The seat sits relatively low, making boarding easy. It also lowers the child’s center of gravity which exerts less forces on them during a crash.

One of the Safest Combination Car Seats Available

The Radian 5 is one of the safest multi-stage car seats available on the market today. With a proven track record of delivering security and protection in real world crash scenarios, Diono radian car seats have been a favorite of many parents for over a decade. Introduced in 2005 as the first convertible car seat with a full steel frame in the United States, the radian rXT has consistently won the Seal of Approval from the National Parenting Center and Parent Tested Parent Approved (PTPA). Radian 5 is based on that best selling US car seat and has won multiple awards of its own from Loved by Parents, Mumii and more.

Weighing value for money

Kids are expensive, but as parents we want to provide the best whenever possible. Car seats range in price from under £100 to upwards of £600. Reviewing multi-stage car seats may leave you with some sticker shock, but compare those prices to what you might pay if you were to purchase different seats for each stage your child will go through.

Infant Carrier (Group 0+) £50 – £500

Combination (Group 0+, 1) £50 – £500

Multi-mode (Group 0-2) £49 – £400

High Back Booster (Group 2/3) £30 – £300

Many parents start out with an infant carrier for its ease of use with a stroller travel system or because it’s the only seat they are familiar with. That’s a £70+ car seat investment and your child will likely outgrow the seat before his or her 1st birthday. Depending on your child’s height and weight, you could transition to a Group 1 car seat or Group 2/3 booster. However, studies have shown that rear-facing is 5x safer for children up to and beyond their 2nd birthday. So, you’ll likely be in the market for a multi-mode seat before graduating to a high back booster. On average, you will have spent well over £500 on car seats before your child is ready for an adult seat belt.

The Radian 5 is currently available for £225 and covers Groups 0, 0+, 1 and 2.

Why Radian 5?
•  Multi-stage functionality from birth to 7 years old
• 4.6 out of 5 star rating from parents like you
• Unmatched safety of a full steel frame
• Designed to deliver a comfortable ride for growing children
• Extended rear-facing up to 25kg
• Forward-facing with a 5-point harness from 9kg to 25kg
• Lifetime warranty
• TUV certified for airplane use
Bonus: Folds flat for travel and can be worn as a backpack with Diono travel bag (sold separately)

Heavy is good

With a full steel frame and thicker engineered plastic, the Radian 5 weighs around 11kg. Designed to provide unmatched safety and birth to 7 years coverage – we think it’s worth the weight, but understand it may not be the right seat for everyone. Vehicle compatibility and proper installation are key to the effectiveness of any car seat, and should be checked by a certified Child Passenger Safety Technician. Studies have shown up to 80% of car seats are installed incorrectly, minimizing the protection a child receives should a crash occur. So, when you decide to purchase a combination or multi-stage car seat, consider how often you’ll need to move it between vehicles. Some families purchase multiple seats for different vehicles – Allowing for a more permanent installation in each vehicle and travel flexibility for parents, grandparents and/or caregivers.

Built solid for your precious cargo

Diono car seats are lovingly engineered. We build our seats to withstand conditions we hope you never have to face. By purchasing a Radian 5 multi-stage car seat, you are investing in the long term – ensuring the safety and protection of your child until he or she is old enough to fit a Group 2/3 high back booster. Every family’s equation is a little bit different. So, do the math – and travel safely!

Benefits of Extended Rear Facing

Up to 5x safer for younger children

Learn More

Popular Rear Facing Car Seat Bundle

Radian Angle Adjuster


Easy View Plus Baby Mirror

Easy View Plus™


Perfect for rear-facing

Total Bundle Price

A combination like no other

Group 0-2 multi-stage car seat

Meet Radian 5
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