Excellent (9.8)
based on 3,052 reviews

Mammoth Rise & Shine Mattresses

Mammoth Rise & Shine Mattresses

from £898.80

free delivery*

Price Match Promise
if you find a better "next day" offer than this within 7 days we'll refund the difference and take another £25 off the price

* free delivery in mainland GB, on working days. Further details here.

NEW Mammoth Shine Essential Firmer Mattress - Try In Store
RRP £1,069
£749

The Shine Essential mattress starts the collection with a luxury cover and then weaves Tencel fibres into the fabric for further excellence. Tencel is a modern super-soft fabric that keeps sleepers cool and dry. This stuff is brilliant.

The Shine Essential mattress has Mammoth’s standard three PostureCell® zones which provides tailored support where you need it most – providing a great night’s sleep and extra relief from any aches and pains.

  • Firmer Feeling Mattress
  • 240mm Deep Mattress
  • 220mm Medical Grade
  • PostureCell Technology
  • 3 Comfort Zones
  • Luxury Quilted Tencel Cover
  • Ergonomic Handles

Standard Lead Time: 5 - 10 Working Days

Total: £749 with FREE delivery RRP £1,069

Are you using this product for a health condition? If so, you probably don't need to pay VAT. Read the details below or contact us for details.

NEW Mammoth Shine Essential Softer Mattress - Try In Store
RRP £1,069
£749

The Shine Plus mattress takes all of the great features and benefits of the Shine Essential mattress and then gives you more of what you love through a deeper mattress.

This 270mm deep mattress adds more Medical Grade Foam, with now five PostureCell® zones for increased support where it counts.

  • Softer feeling mattress
  • 240mm deep mattress
  • 160mm Medical Grade™ Foam
  • PostureCell® technology
  • 3 comfort zones
  • 60mm soft-touch SkyFoam™
  •  Luxury quilted Tencel® cover
  • Ergonomic handles

Standard Lead Time: 5 - 10 Working Days

Total: £749 with FREE delivery RRP £1,069

Are you using this product for a health condition? If so, you probably don't need to pay VAT. Read the details below or contact us for details.

Mammoth Shine Adjustable - Single (22cm - 90 x 200cm) - MADE TO ORDER
RRP £1,159
£965.83

The Shine Essential mattress starts the collection with a luxury cover and then weaves Tencel fibres into the fabric for further excellence. Tencel is a modern super-soft fabric that keeps sleepers cool and dry. This stuff is brilliant.

The Shine Essential mattress has Mammoth’s standard three PostureCell® zones which provides tailored support where you need it most – providing a great night’s sleep and extra relief from any aches and pains.

Standard Lead Time: 6 Weeks Leadtime

Mattress Size: 22cm - 90 x 200cm (3' x 6'6")

Total: £965.83 with FREE delivery RRP £1,159

Are you using this product for a health condition? If so, you probably don't need to pay VAT. Read the details below or contact us for details.

NEW Mammoth Rise Ultimate Mattress
RRP £939
£649

Mammoth add a generous layer of their latest comfort innovation, SkyFoam, on top of their naturally cooling Medical Grade Foam and PostureCells®, giving both a sumptuous and bouncy feel that is highly supportive and indulgently comfortable. Deserve the best with Mammoth.

  • Softer Feeling Mattress
  • 45mm Medical Grade Foam
  • PostureCell® technology
  • 60mm Soft-Touch SkyFoam
  • 3 comfort zones
  • Vacuum packed and rolled for easy delivery

Standard Lead Time: 5 Working Days

Total: £649 with FREE delivery RRP £939

Are you using this product for a health condition? If so, you probably don't need to pay VAT. Read the details below or contact us for details.

NEW Mammoth Rise Plus Mattress
RRP £669
£449

The Rise Plus mattress contains more of Mammoth’s original Medical Grade Foam and PostureCell® technology layered on top of a really supportive foam core. A proven formula for better sleep and better health.

  • Firmer feeling mattress
  • 40mm Medical Grade Foam
  • PostureCell® technology
  • 3 comfort zones
  • Vacuum packed and rolled for easy delivery

Standard Lead Time: 5 Working Days

Total: £449 with FREE delivery RRP £669

Are you using this product for a health condition? If so, you probably don't need to pay VAT. Read the details below or contact us for details.

Where can I try it?

As with any mattress, we highly recommend that you try before you buy, you can try this mattress and others at 3 of our stores.

Request information and enquire about the Mammoth Performance Mattress.

The Mammoth Performance is unique in the mattress market. If you are interested in the high-specification foam, you have to try-before-you-buy.
We therefore do not publish prices or quote a price over the phone or email.
Speak to one of our sales staff in store.

A mobile number is not required, though please enter one if you wish to be sent a text message when we reply to your enquiry!

By sending an enquiry via this website you agree to our privacy and cookie policy which can be found here.

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Zero-rated VAT

We promise that our prices are the best you can get, but there may be a way to save even more! There is a little known VAT office concession which allows most Back in Action customers to buy certain products without paying the VAT element. If you (or someone who will be using one of these specific products) are suffering from a chronic/long term condition you should fully explore if this concession applies.

To make it clear: when an item can be purchased at vat zero rating for health reasons, and we offer that option on-line, there will be two pricing options shown and you simply choose the one applicable to your circumstances.

To make sure you don't miss out on this concession here is a brief summary:

  1. To claim the VAT concession both you and the product you are buying from us must qualify.
  2. To decide if your condition allows the concession simply call us. We will talk you through the criteria.
  3. If we agree that your condition justifies VAT relief Back in Action will deduct VAT on the following products:
    All Adjustable Bases
    Back in Action Mattress
    Memory Flex Mattress
    Mammoth Mattress
    All Mattresses when purchased with an Adjustable Base
    Altea Lifting Chairs
    MBT Shoes
    The Mobiliser
  4. You will be sent a Back in Action Vat Exemption Form with your order confirmation, on which you will simply state your condition, sign it and return it back to us. We sign it and keep it on file with your order paperwork. If you do not return the form inside 14 days then (of course) we will have to charge you the VAT.
  5. VAT registered companies such as Back in Action have their VAT figures checked on average every three years. During this the VAT office will select a few forms and check that everything is correct from your side and ours.

To summarise: As a health orientated centre we are in a unique position to help you claim what is rightfully available. If your condition and the product you are buying qualifies then we will not charge VAT. We provide you with a simple form, and if this is correctly filled in we confirm that we will not charge the VAT. You don't need to provide us with any proof, but you may need to do so to the VAT office if they select your sale as a random check. The majority of Back in Action customers find they are eligible for this relief.