The Tremendous Topper

Transform your mattress with our most popular topper
Regular price £620.00
Regular price Sale price £620.00
Sale Sold out
Rated 4.9 out of 5 stars
37 Reviews
  • Our thickest, most luxurious topper
  • Naturally supportive and breathable
  • Handmade in our Devon workshop
1. Size

Made To Measure
i If you require a non-standard size, select the nearest, larger size above and then add your required dimensions. Learn More
Free Next Day Delivery
Order by midday for next working day delivery

Try Me

If you can, we thoroughly recommend visiting one of our showrooms to try our toppers and see our beautiful beds up close. Head to the Showrooms page to find your nearest one.


Delivery is free of charge and our current delivery time for toppers is 4 - 5 weeks unless it says ‘Free Next Day Delivery’ above. You can find more info below or on our Delivery page.

Can We Help?

If you have any questions please don’t hesitate to get in touch. You can click on the live chat icon in the bottom right, book a video consultation with our showroom team, or head to the contact page to find our phone & email.

  • Organic

  • Chemical Free

  • Sustainable

  • Handmade

Our top of the range, most popular, and reassuringly well reviewed topper, that can instantly transform any mattress

"We give the Naturalmat Tremendous Topper a two-thumbs up, full-marks score.... It is incredibly comfortable and you’d be hard pushed to find a more substantial one.... Everything about this topper shouts 'premium'.”

– The Independent (read the full review)

  • 1. Cashmere & Bamboo

    From the soft fleece of cashmere or pashmina goats, a luxuriant layer of insulation and breathability.

  • 2. Natural Latex

    From the sap of the Hevea rubber tree. A springy and supportive natural alternative to synthetic foams.

  • 3. Organic Wool

    Sourced from local organic farms. Traps heat when you need it and disperses it when you don’t.

The Tremendous is far from your average mattress topper. We combine the most luxurious natural materials with a level of handcraftsmanship equal to our most expensive mattresses.

We start with a core of springy, supportive natural latex, and surround this top & bottom with sumptuous cashmere and locally sourced organic wool. We then wrap these premium natural fibres in the same clever covers we use across our mattress range, which are naturally hypoallergenic and meet all safety standards without the need for any nasty chemical fire retardants.

This blend of natural materials all add up to a lofty 7cm deep topper that can transform an uncomfortable mattress, and dramatically improve air circulation to prevent you overheating at night (a particular issue with memory and other synthetic foam mattresses). Alternatively the Tremendous can simply add an extra layer of body hugging comfort to elevate your bed’s luxury to the next level. 

Technical Information
2 year guarantee
Topper Depth 7cm
Complies with all relevant British Safety Standards (BS 7177: 2008 + A1 : 2011 : Medium Hazard, and the Furniture and Furnishings (Fire)(Safety) Regulations: 1988)
  • 2 Year Guarantee

  • Free Delivery

  • Pay in 3

Why Buy a Topper?

A mattress topper is essentially a very thin mattress which is placed on top of your new or existing mattress to alter how it feels.

This could be to increase breathability, to adjust the softness of your mattress, or simply to provide an added layer of comfort and opulence!

read our toppers guide

Clever Covers

​In the UK there are strict fire safety standards that mattresses & toppers must pass before they can be sold to the public. An overwhelming majority of manufacturers achieve this certification by treating their products with chemical fire retardants. ​This never sat right with us, and we worked to develop a cover fabric that met the safety requirements without the need for any chemicals whatsoever.

We are also the only mattress manufacturer to add a hypoallergenic finishing pr​ocess to our covers. We treat them with natural extracts to guarantee protection from dust mites and bed bugs - perfect for allergy sufferers, whose conditions are often triggered by these unwelcome bedfellows.

Handmade in Devon

At Naturalmat, we believe that people, not machines, make a superior, long-lasting product. Our team of craftspeople ensure every stitch, every fibre, every tufting button and every cover is painstakingly created, teased and checked. That’s why we proudly stamp ‘Made by hand in Devon’ on all of our toppers.

Rated 4.9 out of 5 stars
Based on 37 reviews
37 reviews
  • RM
    Renate M.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    Tremendous Topper

    Best Sleep Ever xxx

    N Profile picture for Naturalmat
    2 days ago

    Thanks Renate!

  • O
    Verified Reviewer
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Dense, thick & enough yield

    I love this topper. I use this on top of a foam mattress from IKEA and cushions filling the gap in the bigger bed frame 🙈 and this topper is thick enough that I can’t tell I’m sleeping on bits underneath.


    ▪️Smell of lanolin (farmy) - sadly fades away after a few days.



    ▪️not too heavy so manageable 16kg


    ▪️delivered by fedex - wrapped in plastic and they drop it off rolling on the floor

    ▪️unreliable delivery time (estimated 9-1pm but came much later. No real time tracking)

    ▪️4 weeks lead time if you order in-store (but upon contacting customer service they changed this to next day delivery)

    ▪️natural latex is in fact natural and apparently doesn’t lose density over time

    Other options I’ve considered in order of most similar to Naturalmat tremendous topper (King size)

    ▪️Hastens £2990/4380 (Horsetail & Neil - most similar)

    ▪️Cocomat Atlas MATTRESS £2995 (coconut fibre, natural latex - come in two parts, 12 weeks lead time from Natuzzi with vague delivery/installation deal)

    ▪️Savoir £11045 !! (Horsetail & wool, more cushiony)

    ▪️Vispring £2215 (Horsetail & wool, felt plasticky)

    ▪️Abaca (logistically tricky to install. Didn’t try)

    ▪️Woolroom sprung topper £819 (you need to buy and keep the protector £100+ to qualify for 100 nights trial 🤔. Small print is complex)

    ▪️Panda London £130 (memory foam) This is the one I had, too hot, also the foam is made of plastic. Only the cover was made with some bamboo materials apparently. Started to lose…

    N Profile picture for Naturalmat
    1 month ago

    Thank you Ottie for such a comprehensive review. We appreciate your feedback about delivery via Fedex, and are looking internally at different suppliers who can support us better.

  • MN
    Michael N.
    Verified Buyer
    I recommend this product
    Rated 4 out of 5 stars
    2 months ago
    Very comfortable.

    Made a big improvement to our existing mattress.

    N Profile picture for Naturalmat
    2 months ago

    Thanks so much for your feedback, Michael.

  • KW
    Kirstie W.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 months ago
    Sleep Upgrade

    This topper is so well made, I'm so pleased with my purchase. I try wherever possible to omit chemicals from my home, using natural products whenever I can. I've slept so well since purchasing this topper, paired with the duvet I'm out for the count at bedtime. I'd not been sleeping well for so long and this has really changed that. Looking forward to trying the bedlinen next.

    N Profile picture for Naturalmat
    2 months ago

    Thanks Kirstie, very happy to hear it is working well for you.

  • PK
    Peter K.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    5 months ago

    We are very happy with te Toppers. Great Material…Great Help.

    Thank you again…

    N Profile picture for Naturalmat
    5 months ago

    Thank you very much Peter. We appreciate your feedback.

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What You Need To Know About Delivery

  • When can I expect delivery?

    Our current delivery time for toppers is 4 - 5 weeks unless it says 'Free Next Day Delivery' above.

  • How does my topper get to me?

    Your topper will be delivered by our logistics partner and you will receive an email notification when your order has been dispatched.

Ready For A Bounce?

Visit our showrooms in London, Cheshire, Cotswolds or Devon and our expert team will help you find the perfect bed, mattress or topper.