How To Choose The Best Onesie For You

There are now many adult onesie options available in the UK, so here we show you how to choose the best onesie for you. As well as an attractive  design, you should consider which fabric you want, whether you want a hood and whether you want matching socks or integral feet.  Of course, before you buy check size because the adult onesie is not a one size fits all garment. We offer seven adult sizes for our onesies. Then look at our Range of styles and check your Sizing before going to Buy Now.

Sleepsuit fabric

Fabric ExampleFabric is important to the quality and feel of your onesie suit. We use a range of soft fabrics but usually either 100% jersey cotton or 100% polar fleece. Cotton is thinner of course yet gives a natural, comfortable, breathable garment – warm in winter and cool in summer.

Polar fleece is a synthetic fabric (polyester). It is thicker for extra warmth and gives a lovely soft finish.

Adult onesies skiingBoth fabrics are easy to wash and should not shrink if instructions are followed (basically a cool wash and hang to dry)

To choose the best onesie, we would say cotton is best for all year wear and for those who want to sleep in their funzee. For those who want thicker winter warmth to lounge around, or something for that ski trip, we suggest polar fleece.


Cute Adult OnesieMost funzees come with hoods for extra warmth. Wear them outside, go shopping in them (sorry Tesco)! However, for those who might find this uncomfortable, some of our adult onesie styles are unhooded (Lilac, Retro and Festival all have Unhooded options ).

Footed vs Slipper Sox

We offer both footed and unfooted styles to help you choose the best adult onesie. However, we have found the feet on footed onesies get dirty and smelly so quickly that you are constantly washing your funzee (try smelling your slippers). Also the feet get torn or holed and most people don’t wanted footed pyjamas in bed. So, as well as footed or unfooted options, we offer a range of soft socks with non-slip soles and an anti-bacterial finish. Perfect for wearing round the house or in bed. They are much easier to wash, and if they get holed just put on a new pair.

Elasticated to fit foot sizes UK 4-10. Only £2.00 per pair. (Sock colours will be close to, but may not exactly match the colours of our funzee designs – Festival, Retro, Reggae, Cute, Bumble, Wizard, Wild).

Unisex Sizing

Adult OnesiesForget your usual sizing! This is our own Unisex sizing. Best to buy based on Height of wearer.

Unisex Sizing means that our Medium should fit a medium human being (not an alien), so will be smallish for men and largish for women. Funzees are designed to be baggy. The most helpful guide to sizing is height, as this determines the overall length of the garment. Check more sizing information here Sizing

Additional Considerations

Adult Onesie Considertions

Poppers or “snaps” have proved uncomfortable and unreliable so we now use a strong front zip from neck to crutch designed to make getting in and out easy.

The cuffs and ankles on all funzees are ribbed to help adjust sizing for extra comfort. For those that don’t want to remove the whole garment when attending to their toilette, we have introduced a rear Butt Flap for our Retro design.


On most designs, there are side pockets to keep your hands warm and some also include a handy breast pocket.


Custom Adult Onesie PrintingWe do not offer a printing service but the single colour onesies in either fleece or cotton are suitable for printing. So if you want “Jens Hen Night” or “College Tour 2012” on the back of your funzee, have a word with your local Tshirt printing shop. There are several ways words and logos can be printed and the cost will depend on the number you want and the complexity of the design.


Priced from only £19.95 per item (plus £3.95 per order contribution to UK postage & packing) see order page for full price details.

Want to see something different?

We also offer those stretch full body suits. Ours are called funskins. And we may introduce animal onesies shortly. Have other ideas? To join in the conversation follow us on Facebook or Twitter

Note: we are constantly striving to improve the design and manufacture of funzee so your romper suit may not be exactly as shown in the photos