How do I find my fit?
We want to make it as simple as possible for you to find the right fit first time. We've built some handy size charts to help and a how to measure guide which you can find here.
If you’re still not sure you use our first fit guarantee to check your sizes and return no questions asked – learn more
Still not sure we're happy to help answer any questions you may have just get in touch.
How do the multi-buys work?
Simply save on the cost of an individual item with the more items you buy. Our underwear is for everyday, not just special occasions so we’ve set up tiered pricing allowing you to save more when you buy more, split into easy to shop bundles.
- Just for today = 1 item
- Weekend - 2 items
- Bank Holiday = 3 items
- Working week = 5 items
- Whole week = 7 items
- Fortnight = 14 items
How does the dissolvable packaging work?
Our garment bags dissolve in hot water. 80 degrees Celsius to be exact. Just boil the kettle, pop your bag in a jug or basin, pour the hot water over it and watch it dissolve.
Our bags are non-toxic, and leave zero micro plastics or harmful residues when dissolved. So you can simply pour it down the drain. Learn more about our packaging.
How do I care for my garments?
We've partnered with clevercare initiative to provide more environmentally friendly care instructions. We recommend you wash your garments at 30 degrees Celsius to minimise the environmental impact of your laundry, but specific instructions per item can be found on each product page.
Shipping & returns
How do I return or exchange an item?
We've tried to make returning orders as simple as possible, as well as completely free. Just follow our simple returns process, of which there is more information here.
If you want an exchange follow our exchange process so we can make sure we get it right.
There's a problem with my delivery, what do I do?
We're sorry to here there's an issue with your delivery. Whether you're having problems tracking your item or something's not right when it arrives we're here to make it right. Just get it touch.
Where do you ship to?
We offer free shipping and returns within the entirety of the United Kingdom. If you’re in London we will deliver with our zero emissions partner too!
For international customers we recommend you purchase through our wholesale partner Wolf & Badger, where taxes and duties are included at checkout.
Please see our deliveries and returns page for more information about our shipping policies.
How does the first fit guarantee work?
We've tried to keep it simple, because we want to make sure you get the right fit for you. If you're ordering with us for the first time and need to check the size or style on our underwear you can No questions asked. Just make sure if you're returning a size, you leave the sticker on.
There's more information on how it works here.
Our take-back scheme
How do I use the take-back scheme?
If you've got a pre-loved, worn out ONE Essentials item you can register your item for recycling and return it to us here.
Just add your order number as this helps us track the products journey. Once we receive your enquiry we'll send a pre-paid shipping label to you… just pop it in the post.
What happens to the items I return in the take-back scheme?
When we create our garments we design them to have a reduced impact throughout their lifecycle and take the responsibility for what happens to them when you no longer want them. They've been designed so that when you return them they an either be recycled into new fibre's or they can biodegrade.
What will you recycle?
We will recycle any underwear. Any brand, any material, any size. Bra's, pants, boxers and socks. Men's women's or kids, we just ask you wash it before returning.
What if I live outside the UK?
Our recycling scheme is currently only available to UK based customers. it's not viable for us at this time to offer this outside of the UK, but if you do want to recycle your underwear, drop us an email we may be able to fin you a solution in your area.
What is a small parcel size?
Please ensure you parcel is not bigger than 45cm length x 35cm width x 16cm height. If you wish to send a larger box please get in touch with us.
How are you measuring the impact of products?
Understanding the impact of our production is really important to us so we're working with Green Story to assess our materials and our supply chain crating a lifecycle assessment on each item. Green story work to ISO 14040 standards.
Where does the 1% donation go?
We want to not only create our clothing better, but have an active part in the clean-up of waste textiles and clothing. That's why we’re partnering with the OR Foundation as they work on the 'front line' with the people most effected. Learn more about our 1% pledge here.
Frequently asked question
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