Onesies for babies & newborns

Discover high-quality secondhand onesies for babies and newborns at Neworn—lovingly selected and in excellent condition, directly from parents for parents. Download the free Neworn App for iOS and Android now and share the joy of sustainable shopping and selling with other parents from Austria & Germany.

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Cuddly secondhand baby Onesies in Austria & Germany: For comfortable everyday heroes

In our marketplace app, discover a wide selection of high-quality second-hand rompers that keep your baby comfortable and warm all around — for the best moments of everyday life.

Rompers are the perfect choice when it comes to keeping your baby cuddly and safe for everyday use or when sleeping. In the Neworn marketplace app, you'll find a carefully selected collection of second-hand rompers that are passed on by parents from Austria & Germany — cared for with love and care. From classic jumpsuits to cute playsuits, everything your baby needs for a comfortable time is included.

Our rompers are available in many variants: with short sleeves, long sleeves, with foot for cold days or without foot for summer. Hooded models are perfect for outside, while rompers with a convenient diaper opening or snap closure make swaddling easy. Rompers with zippers, which make them quick and easy to put on and take off, are also particularly practical.
For a comfortable night's sleep, there are also sleepsuits that keep your baby warm at night. The ribbed pattern provides extra stretchability, while models such as the romper suit or romper set provide additional versatility. Perfect for any occasion or adventure, whether it's cuddling, sleeping, or exploring the world.

Brands such as Sanetta, H&M and C&A offer high-quality models, which you can find in our second-hand marketplace. So you can be sure that you will receive a well-preserved piece for your baby that will have many happy days to come.
Are you still looking for suitable wrap-around bodysuits, sweeten Baby bodysuits or cozy BABY pajamas & overalls? Then browse through our other categories too — there are many more highlights waiting for you there.

Neworn is the ideal online marketplace for parents who want to buy and sell second-hand baby and children's items easily, sustainably and stress-free. With us, you can not only save money, but also make a real difference for the environment. Whether you're looking for lovingly cared for baby and children's clothes, practical furniture for the children's room, baby and children's toys, child seats or strollers that need a new home — on Neworn, you'll find everything your family needs. And if you have something that you no longer need, you can sell it quickly and easily on Neworn instead of letting it gather dust in cupboards or corners unused.

The Neworn app is free for ios and android available and allows you to post classified ads anytime and anywhere in Austria & Germany and discover a wide selection of high-quality second-hand baby and children's things.

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What our users say

Super Marktplatz für Kinderkleidung
Tolles Konzept für den nachhaltigen Umgang mit Kinderkleidung! App ist super easy zu bedienen. Mein Einkauf hat bestens geklappt 😊
Alexandra
Schober-rhomberg
Großartiges Konzept
Die Neworn App macht einfach Sinn - zu viel Gewand von Kindern wird weggeworfen. Dabei bleibt Geld für die Eltern und natürlich auch unsere Umwelt auf der Strecke. Top - weiter so!
David
Auer
amazing platform
amazing platform - user friendly and environmentally concious! would recommend
Ewa
Lenart
Mich hat Neworn aufgrund der…
Mich hat Neworn aufgrund der Nachhaltigkeit angesprochen, deshalb habe ich dort bestellt. Die app ist übersichtlich und die Kommunikation und Abwicklung easy. Fünf Sterne da alles top!
Stefanie
Hiller

TheNeworn Magazine

Discover the latest fashion trends for your child or baby, explore new sustainable brands in Austria & Germany, and get practical tips for living a more eco-friendly family life.
Understanding children's sizes: The practical guide for dads
July 1, 2025

Buying children's clothes can be confusing for new fathers at first — especially if you're not familiar with children's sizes. In Austria and Germany, however, clothing sizes for children are regulated according to a simple system: The number of clothing sizes usually corresponds to the child's height in centimeters. This guide explains step by step how children's clothes work in terms of sizes from birth to around 10 years of age. You'll find out which sizes are typical at which age, how to choose clothes that are appropriate (with regard to growth spurts, seasons and fit) and what you should pay attention to when buying second-hand children's clothing. We'll also show you a size chart for kids and why second-hand clothing — e.g. via the Neworn platform — is a sustainable and practical choice for families.

Why Neworn?

Personalisiertes Einkaufserlebnis

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Outstanding user-friendliness

Community of eco-conscious parents

Quality control & reviews

Ready for the future of baby fashion?

Download the Neworn app now and become part of our community of sustainable mums and dads