Ultimate Guide to Choosing Car Seats for Twins
Kevin Chen · 10 February 2025 · 7 min read
Twin life is full. Nappies, short nights, and then the puzzle of getting two car seats to fit properly in one back seat. Here is how to work through it calmly.
Seat types, quickly
Infant seats
Perfect for newborns. They face rearward, which is safest for the youngest babies, and most use a base that stays in the car. The downside is that they are outgrown fairly quickly and can be bulky when you need two.
Convertible seats
These grow with your child, starting rear facing and turning forward later. Good long term value, though fitting takes more care and they are less portable.
Combination seats
They start as a forward facing harnessed seat and later become a booster. Kind on the budget, but not suitable for newborns.
Tips for choosing
- Safety first: look for R129 (i-Size) approval and read real world reviews as well as the specs.
- Measure your back seat: two infant seats often need close to 18 inches of width each, so check before you buy.
- Match height and weight: infant seats usually top out around 22 to 35 pounds, so check how much room your twins have left.
- Comfort matters: good padding, easy buckles and adjustable headrests make every trip smoother.
- Budget wisely: watch for sales on trusted brands, and never trade safety for a lower price.
Travelling with twins
- Pack more nappies, wipes and spare clothes than you think you need, plus snacks and a couple of surprise toys.
- Use a travel system so carriers click straight onto the stroller and naps are not disturbed.
- Take breaks every couple of hours for stretching, changes and a wiggle.
- Divide and conquer if there are two of you, one on the children and one on the logistics.
- Expect a little chaos, breathe, and remember it passes.
- Save some white noise or calm music on your phone for the fussy stretches.
FAQ
Which seat is safest for newborn twins?
Infant car seats are usually the best start, because they support a newborn properly in a rear facing position.
How do I make sure both seats fit?
Measure the width of your back seat first, then check the dimensions of the models you like so they sit side by side without either being compromised.
How long do twins stay in infant seats?
Until they reach the seat's weight limit, or their head is within an inch of the top of the shell, whichever comes first.