Nrem Mattress

What makes the Nrem special?

Nrem is a unique, customisable mattress, designed for a better, pain free night's sleep. The unique design consists of a 1000 pocket sprung base and 10 interchangeable foam inserts (5 in a single) in super soft, soft, medium and firm, which allow you to adjust each zone to suit your individual needs. You can tailor your mattress to give you soft comfort for painful areas and firmer support where it’s needed. You can even purchase extra firm inserts if you need to. 

I suffer from chronic pain, will the Nrem help?

The Nrem mattress is designed to help all sufferers of chronic pain, including back pain. You can design your very own sleep experience by adjusting the foam inserts inside the mattress to give bespoke comfort and support to suit your specific pain needs. Whilst the mattress can not cure chronic pain conditions, it can help you to get more comfortable at night, giving you a better night's sleep.

I don't suffer with chronic pain, can I still use the Nrem?

The Nrem is designed not only for pain sufferers, but anyone looking to get a better night’s sleep. 94% of customers feel a significant improvement in the quality of their sleep after just 1 night. The 5 customisable zones mean you can tailor your mattress exactly to your body - this helps to align the spine and maintain good posture, preventing aches and pains in the morning. 

How does the comfort changing system work?

The Nrem is divided in to 5 zones for each sleeper. Inside the mattress you'll find 10 foam inserts (5 in a single) in super soft, soft, medium and firm densities.

The inserts can be interchanged across each 'zone' allowing you to have softer comfort or firmer support for each area of your body. Typically, people place the softer inserts beneath the hips and shoulders, with a firmer insert beneath the back - but it's completely down to personal preference!

Is the Nrem good for side sleepers?

The comfort changing system means that the Nrem is suited to any sleeping position. Simply adjust your foam inserts until you feel comfortable. 

How do I decide where to place the foam inserts?

The Nrem will be delivered with the foam inserts arranged in our 'Lower Back Pain Setup'. This is the most common setup that our customers choose and generally, it has a soft feel to it. 

We recommend you try this setup to begin with, but if it's not comfortable, it's really simple to change the setup at any time. 

If you have pain in a particular area, you may need a softer insert there, but this also depends on your personal preference and the position you sleep in. Back sleepers typically opt for a slightly firmer feel whereas side sleepers prefer something softer.

We are always on hand to give advice and help you to find the setup that's best for you. Please telephone 0333 003 3352 or email to discuss your personal needs. 

Can I get additional foam inserts?

Absolutely! If you need to replace any inserts or if you need any extra to find your ideal setup, you can purchase them for a small charge. We have 5 densities available: Super soft, soft, medium, firm and extra firm. 

To order your inserts go to 

DUO Mattress

What makes the DUO special?

DUO allows couples to select their own comfort level for their side of the bed. It's seamlessly split down the middle so you won't feel any uncomfortable ridges or zips.

You can choose between super soft, medium and firm for each side. You can even swap your firmness with the pull of a zip, so if your preferences change, your mattress does too. Additional inserts are available to purchase in super soft, soft, medium, firm and even extra firm. 

DUO is not one size fits all, it’s the one that fits right.

I have back pain, will the DUO help?

If you wake up with aches and pains, you may benefit from a firmer, supportive mattress. You can choose firm for your side of the mattress, whilst your partner can opt for a softer comfort if they prefer.

If your pain is chronic, you may be better suited to the Nrem mattress which is made up of 5 interchangeable comfort zones. 

Who is the DUO mattress suitable for?

Nobody should compromise on their comfort. The DUO mattress is perfect for couples who are different sizes or have different preferences on comfort. Some people like to sink in to a cocoon-like soft mattress whereas others prefer to lie on top of a mattress with no give. The DUO gives the best of both worlds, without the need for a zip and link style mattress.

Can I change my comfort level in the future?

Of course! You can tweak your comfort level at any time. 

Additional foam inserts in your chosen density are available here


Are Tweak mattresses suitable for allergy sufferers?

The high quality, breathable materials we use makes our mattresses dust-mite and bedbug resistant. 

Tweak mattresses are also suitable for those with sensitive skin.

The cover can be removed and machine washed, whilst the individual components within the mattress can also be removed for cleaning - helping you to keep your mattress fresh for years to come. 

What are Tweak mattresses made of?

Both the Nrem and DUO mattresses have been engineered to give you the best night's sleep, without compromising on comfort. 

Inside each mattress you'll find 1,000 full size, individually wrapped pocket springs and our unique, comfort changing foam layer. This is topped with a supersoft thermo regulating foam layer for extra comfort and coolness.

The foam we use is an open pored, high density Polyurethane foam which is more resilient and more breathable than traditional memory foam.

The mattress is finally encased in our luxury, hypoallergenic cover which can be removed and machine washed for easy cleaning.

Do you use memory foam in Tweak mattresses?

Traditional memory foam reacts and moulds to the body when heat is applied. Sleepers tend to sink in to their mattress, compressing the foam and stopping air from flowing and escaping. Memory foam takes a while to return to its original shape making it difficult for some sleepers to turn over as well as being too warm for some.

We use a high density Polyurethane foam which has an open cell structure different to memory foam. The larger air pockets mean the foam reacts to pressure and not heat. The structure of the foam means heat can escape, and air can flow freely, so you won't overheat, nor will you struggle to turn over in bed. 

Do your mattresses contain any latex?

No. All Tweak mattresses are completely latex free.

Who manufactures Tweak mattresses?

All Nrem mattresses are made right here in the UK by a leading manufacturer, Comfortex. Founded in 1997, Comfortex has grown to become one of the UK's largest independent foam converters and the largest suppliers of cold cure moulded foam seats to the furniture industry in the UK.

With 97 staff operating out of a 57,000 ft² factory in the centre of Oldham, the Comfortex team is committed to excellence and specialise in the highest quality foam products.

What safety certificates do you have?

Tweak mattresses have been tested in line with UK law and meet all UK health and safety requirements. Our products are certified under the Furniture and Furnishing Regulation Act 1988. For more information on our safety certificates please contact us directly.


How much does delivery cost?

All mattresses are delivered by a 2 man team to your rom of choice. This is free of charge for UK Mainland however a small charge may be incurred for Highlands, Channel Islands and Ireland. If you are unsure whether you are eligible for free delivery, please get in touch.

Accessories are delivered via courier service. A small charge may be incurred for orders under £40 or outside of UK Mainland.

How long does delivery take?

We aim to deliver all products in a reasonable timeframe.

Nrem mattresses are usually delivered within 5 working days.

DUO mattresses are made to order and therefore are usually delivered within 15 working days.

Additional foam inserts are made to order and are usually delivered within 5 working days.

Other accessories are usually delivered within 3 working days. 

How do I arrange delivery?

Our mattresses are delivered by a third party service. They will contact you directly to arrange a convenient date to bring your Nrem or DUO. 

Please note: you will not be contacted to book a delivery date until your mattress is ready for dispatch. As the DUO is made to order, this means it can take up to 10 days before you will be contacted. If you have any questions about your delivery, please contact us.

Accessories will be delivered via courier and you will receive email and SMS notifications regarding your order. 

Can I add special delivery instructions?

If you have any special requests regarding delivery, please send an email to us at and we will try our very best to accommodate. 

How will my mattress be delivered?

All our mattresses are delivered by our first class two man delivery team. Your mattress will be delivered to the room of your choice, placed on your bed, and all packaging removed. We will even remove your existing mattress for you too – make sure you select this option at the checkout if you need this service.

As your mattress is vacuum packed, it needs to expand before you can sleep on it. This usually takes 3-4 hours but it’s best to allow it to breathe for up to 6 hours before making the bed. Opening a window, unzipping the cover and folding back to reveal the foam inserts will help to dissipate any odour.

Can I choose my delivery date?

Our delivery team will offer you a date. If for any reason this isn't suitable for you, you'll be able to rearrange for a date that is more convenient. 

Will you take my mattress to my bedroom?

Yes! Our 2 man delivery team will bring your new mattress to your bedroom, place it on your bed and remove all packaging. We'll even take your old mattress away for you - please remember to add this service to your order if you do require it. 

Do you deliver to the Republic of Ireland?

Yes. Delivery is available to both Northern Ireland and the republic of Ireland.

A delivery charge will be applied to your order at the checkout if you are outside of the UK mainland.

Do you deliver to the Scottish Highlands, Channel Islands and other non-mainland locations?

Yes. We are able to deliver your mattress to the Scottish Highlands, Channel Islands and Ireland.

Orders outside of the UK mainland will be subject to a delivery charge. If you would like a quote for your postcode, please get in touch with us at 

Can you take away my old mattress?

Yes. Our delivery team can remove and recycle your old mattress for a small charge.

If you wish to use this service, please be sure to add it to your order before checking out. 


What is the returns policy on Tweak mattresses?

If you are unhappy with your mattress, please let us know at your earliest convenience. We can help you to find a better foam insert configuration for your needs.

You will have 100 nights from the date of delivery to ensure you love your mattress. If you decide it's not right for you, we will collect it and refund you.

Please note: There is a 30 day adjustment period when you get your new mattress. It takes time for your body to adjust to a new sleeping surface so we ask that you sleep on it for 30 days before starting the returns process.

If you do return your mattress, you will be liable for a collection charge (usually £60) which will be deducted from your refund where possible.

What is the returns policy on accessories?

If you have received accessories as part of a bundle with your new mattress, and you choose to return the mattress - you must also return the accessories (such as pillows). Failure to return these products will result in you being charged for them. 

We offer a 30 day returns policy on Tweak Pillows. Please ensure the product is returned in its original packaging, free from any damage.