Baby Iron Man Onesie

$44.99

Made from: soft, warm flannel
Design: red body with gold panels on the chest and arms, arc reactor on the front, Iron Man hooded mask
Fit: long elastic cuffs for a secure fit, roomy cut
Perfect for: naps, superhero photos, chilly mornings, first Halloween
Care: machine washable

Ultra-soft fabric | Warm and comfortable
Pajama and costume | Two in one
Any occasion | Bedtime, parties, movie nights
Gift-ready | One they’ll actually wear

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Made from: soft, warm flannel
Design: red body with gold panels on the chest and arms, arc reactor on the front, Iron Man hooded mask
Fit: long elastic cuffs for a secure fit, roomy cut
Perfect for: naps, superhero photos, chilly mornings, first Halloween
Care: machine washable

Newborn Iron Man Onesie gives a baby the coziest armor of the Avengers

Give your little one the chance to dream big with our Iron Man onesie for babies, ideal for young superhero fans. Designed to guarantee exceptional comfort, this pajama draws inspiration from the fascinating world of Marvel and the Avengers. Picture the smiles in the morning, your child feeling as bold and inventive as Tony Stark himself.

The flannel fabric of this garment offers reassuring warmth while its roomy fit allows ideal freedom of movement. Your child can move freely, as if wearing Iron Man's real armor. It is the perfect choice for long hours of play or peaceful nights, and it comes in sizes from 3 to 30 months.

A mini Tony Stark ready for adventures in an Infant Iron Man Onesie

Wrap your baby in the warm embrace of our baby Iron Man pajamas and watch them set off on epic adventures. The iconic colors of Iron Man's armor instantly evoke the courage and team spirit of the Avengers. With a snug hood and a zipper closure, this outfit is as adorable as it is practical.

This one-piece combines fun and function, fueling their dreams while keeping them nice and warm. Add it to your cart for superhero nights with your little Avenger.

Assemble your family superhero team

For a parent and baby duo, the Iron Man onesie brings this outfit in adult sizes. The baby Captain America onesie shares the same gentle spirit for a second little outfit. Finally, the baby onesies collection gathers every design made for babies.

Frequently Asked Questions

Will I get too hot in it?

It's made to keep you warm on the couch through fall and winter, so yes, it's cozy. The relaxed fit lets air move around, though, so you won't get that stuffy feeling you get from tight pajamas. It comes into its own as soon as the weather turns.

How do I wash it?

Machine wash cold on the gentle cycle. Turn it inside out and toss it in a mesh laundry bag to protect the hood. Skip the dryer and the iron. It air-dries fast and fluffs right back up on its own.

Is it unisex?

Yes, every onesie we make is unisex. The roomy cut works for men and women alike, our kids' styles fit girls and boys just the same, and our baby sizes are cut the same way for everyone. Just check the size chart to find your fit.

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