Free UK delivery
100% handmade in the UK
Original All-in-One Since 2008
Delivered Worlwide

Tailored to You

Tailored to You

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Over the past 10 years, we have made it our mission to share warmth, fun and happiness with people all over the world. We have handmade over 66,000 onesies right here in the UK, delivering to over 200 different countries Worldwide.

 We maintain a presidential and unquestionable standard throughout the whole of the company, from our team, training, equipment, materials and finished product.
We pride ourselves on making high quality Products that are made to last, so they will be with you throughout life’s biggest milestones.
As proud members of Made in Britain, here at The All-in-One Company, British Manufacture is extremely important to us. Full of integrity, our creative process embraces the diversity of modern Britain today with all it’s traditions and contradictions.
All of our Onesies are ethically handmade right here in the beautiful county of Northumberland.


Since first launching in 2008 we have celebrated uniqueness, that's why we now offer more sizes than ever before.

Our standard sizes now range from 0-3 months to 5 XL.
As members of The Guild of Master Craftsmen, all of our Onesies are handmade to order by our team of expert cutters and machinists. Tailored to you we offer a Made to Measure Service so you can let us know your specific measurements.
Whether you need added sleeve length, a shorter leg length, or extra width for broad shoulders - nothing is too much trouble.
If there are any special requirements, or measurements you would like us to know about, our Development Team will be more than happy to help create the perfect Onesie, tailored to fit you.

You can pop your requirements in the Order Instructions Box at the checkout, or if you'd like to speak to us before ordering, you can do so by Phone: 01670 522478, Email: info@the-all-in-one-company, or our online chat found in the bottom right hand side of our website - we're always here to help.

The Maternity Onesie

Maternity Onesie Pink Blue Grey Stripes Spots by The All-in-One Company® edit

We know that pregnancy is a very special time, and we want to help make you feel as wonderful as we can, that’s why you’re able to Create-your-Own Snuggletastic Maternity Onesie on our Maternity Onesie Builder.

Tailored to fit Mums-to-be and your growing bump, you can order the size you would normally wear.
An essential that will last throughout your whole pregnancy, our Maternity Onesies are perfect for relaxing in, whether it’s in the magical weeks leading up to or after the arrival of your baby.

The Sensory Onesie


With over 90% of people with Autism suffering from Sensory issues, we’ve linked up with The National Autistic Society to create clothing that allows everyone to feel Snuggletastic®.

The Sensory Onesie is sewn in a way that seams feel seamless, no labels are sewn into the garment, and there is nothing that causes irritation.

You’re able to choose which fabrics you’d like your Onesie to be made from. We offer a complimentary Fabric Swatch Pack so you can see and feel the difference between each fabric type prior to ordering.

All of our Onesies now come with a Zip Cover, so the back of the zip is covered with fabric, making it soft against the skin.

*Onesies can also be double stitched to prevent ripping or tearing*

We’re also donating 5% of each Sensory Onesie Sale to The National Autistic Society.

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We know that everyone is unique, so rather than offering you a collection of off-the-shelf products, we offer you the chance to Create your very own Onesie on our Personalised Online All-in-One Onesie builder, which is compatible on desktops, tablets and mobile phones and allows you to create your onesie to your very own specifications.

Our ever-growing Fabric Range is full of Snuggletastic fabrics from Cotton Jersey, Luxurious Bamboo Towelling, Supersoft Cuddle Fleece, Organic Cotton and Plush Sweatshirt – to name but a few! All of our fabrics come in a range of different colours and patterns, so you’re sure to find a fabric, or two, to suit you.
We always make sure our Fabrics are high quality, so we carry out a range of tests from cutting and sewing samples, to wash tests, making sure there’s no colour run or shrinkage.

As well as being able to mix and match various fabrics to Create-your-Own colour combinations, hoods, feet, pockets, ears and tails can be added to your Onesie. You can take personalisation one step further by adding embroidery, whether it be a name, message or image – it’s totally up to you!