Tweak DUO Mattress Review

The Tweak DUO mattress is a great solution for couples who want to sleep on different firmness levels, but on one mattress. Each sleeping partner can choose to sleep on a soft, medium or firm responsive foam. The mattress also has 1000 pocket springs for superior comfort and bounce. Tweak DUO comes with 100 night home trial and has been endorsed by “Good Housekeeping 2018“.

tweak duo mattress review

Disclosure – independently reviews and ranks products, by thoroughly researching them. We may receive a commission when a purchase is made through our links, at no cost to our readers.

What’s inside the mattress?

The Tweak Duo mattress is comprised of four layers and is 25cm deep.


Layer 1: Revo Foam is an open cell foam which wicks away moisture for a cool night sleep. It also contours and cushions the body, providing pressure relief.

Layer 2: Reflex Foam which bounces back, without that sink in feeling. This is the foam layer, which you can custom order in 3 firmness levels: soft, medium, or firm.

Layer 3: Pocket Springs – there are 1000 pocket springs in the King size mattress. They are individually wrapped to provide bounce when you move, without disturbing your partner.

Layer 4: High Density Base Foam – the pocket spring layer is surrounded on the bottom and sides by high density supportive foam. While above the spring layer there is medium density reflex foam. This way the springs have just the right bounce level.

The mattress cover is hypoallergenic and fire resistant. It can be easily unzipped and washed at 30 degrees.

Tweak makes all their mattresses in the UK.

How firm is the mattress?

The mattress comes in 3 firmness options: soft, medium, and firm.

You can further customize, by ordering one side of the mattress to be soft and the other firm for example. This is ideal for couples who want different firmness levels, but don’t want to sleep on 2 different mattresses.

Spring Count:

There are 1000 independent pocket springs 10cm in height, for the king size mattress.

Best for which sleeping position?

Any sleeping position (back, side or stomach).

Allergy sufferers:

The Tweak Duo is a very good option for allergy sufferers, because the mattress is naturally dust-mite resistant. The mattress has a modular design, which means that over time you can purchase and replace for a small fee the top foam components so there’s no dirt or dust build up. The top cover is hypoallergenic and can be easily removed and washed at 30 degrees.

Does Tweak offer 100 Night Trial and Free Returns?

The company offers 100 night trial, where you get to sleep and test the mattress at home for 100 nights. If you find that the mattress firmness is not right, you can contact the company and they’ll exchange the firmness of your foams. If for some reason you’re not happy with the mattress, you can return it for free. Just contact the company, they’ll arrange a free pickup, and will then refund your money in full.

Delivery Information:

Delivery is free to mainland UK, and their 2 man courier will deliver the mattress to your room of choice. The mattress is made to order, so delivery takes between 8-15 working days.

Old Mattress Removal:

Tweak offers old mattress removal for a £30, just select this option at the checkout page, and their delivery team will take the old mattress away when they deliver your new mattress.


10 year limited warranty

Is 0% Financing Available?

Unfortunately Tweak doesn’t offer 0% financing on their DUO mattress. They only offer it for their NREM mattress, which is also has the option to customize your firmness level on both sizes of the bed. Read more about the Tweak NREM mattress.

What surface should be used with the Tweak Duo mattress?

The DUO works with all standard UK bed bases, including slatted, divan, and box sprung. As well as adjustable beds.


Other products sold by Tweak:

Additional DUO Mattress foam inserts – they come in Super Soft, Soft, Medium, Firm and Extra Firm.

Tweak NREM mattress – it lets you customize your mattress firmness even further. It divides each side of the bed into 5 body zones with interchangeable foam inserts. These foam inserts come in soft, medium and firm option, so you can interchange them for the most comfortable mattress feel. Read the full Tweak NREM mattress review.

Additional NREM Mattress foam inserts – they come in Super Soft, Soft, Medium, Firm and Extra Firm.

Tweak Pillow – made from 100% Cold Cure PU Foam it will keep you cool and won’t lose its shape.

Customer Reviews:

The mattress has 8.8 out of 10 stars on Trustpilot, based on over 300 customer reviews. To read some of the customer reviews, click here.


£795 Double Size | £895 King Size | £995 Super King Size

Available in 3 sizes