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This item is now discontinued.
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60% of 100
based on 2 Reviews

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Try mattress for 14 Nights Enjoy a sleep trial on this mattress

Mammoth Rise Plus Mattress

2 Reviews
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Frequently Asked Questions

How long does this mattress take to open up fully after we have opened it?
View all 1 customer questions Ask a question

Enjoy a 14 Nights sleep trial on this mattress

Not happy with your purchase? We’ll swap it for you. Full peace of mind that your next mattress will be perfect for you!

Product Specification

  • Soft
  • Medium
  • Firm
  • Super Soft
  • Soft
  • Medium Soft
  • Medium
  • Medium Firm
  • Firm
  • Extra Firm

Key Features

  • Discontinued Model.
  • Click here to view the current range.
  • 40mm Medical Grade Foam.
  • Posturecell Technology.
  • 3 Comfort Zones.
  • Full Foam Mattress.
  • 10 Year Warranty.
  • No Turn Mattress.
  • Mattress Depth: 24cm
  • Rolled Up Upon Delivery.
  • FREE 2-Man Delivery.

    Key Information

    More Information
    Sleep Trial14 Nights
    Warranty5 Years
    Guarantee5 Years
    Mattress Depth20-25cm
    TurnableNo-Turn

    Product Description

    THIS ITEM IS NOW DISCONTINUED. Click here to view the current range.

    Mammoth is a World leader in producing mattresses that are comfortable, supportive, excellent value and are fully researched and designed using the latest in sleep science. So much so, in fact, that a Mammoth mattress is proven to help you get to sleep quicker, sleep deeper and for longer. No other mattress on the market can boast such approval, and this has resulted in sporting bodies, health groups and sportsmen and women alike, all endorsing Mammoth mattresses. Not only that, but Mammoth is the one and only brand ever to have been endorsed by the NHS.

    The Mammoth Rise Plus mattress is a hugely popular addition to the Mammoth range. Packed full of excellent details, and crafted to provide you with a luxurious night's sleep, this mattress is excellent value for money. You will enjoy a comfortable feel, but the mattress will be busy working to provide support, preventing aches and pains from forming overnight, as well as working to enhance your body's posture and improving circulation throughout the night, night after night. It is for this reason that so many sports professionals use a Mammoth mattress; your health will benefit as a result of using a Mammoth mattress, it is as simple as that.

    This mattress has no springs, only Medical Grade foam, not only making it comfortable and supportive, but also silent at all times, and perfect if your partner suffers from a restless sleep. This mattress will prevent the movement from reaching you, leaving you undisturbed to enjoy deep sleep. The foam layers are designed to work in harmony with one another, starting with the foundation layer of more supportive foam. This layer will provide the core strength to the mattress, giving you support as needed. On top of this is a superb Medical Grade foam layer, castellated (complicated grooves) to allow for air to move through the mattress, keeping you cool. Not only is this layer excellent at heat management, but it is also excellent at offering a refined level of support. This layer is also Zoned, providing your lumbar region with more support than the surrounding areas, and further increasing the accuracy of the support on offer.

    Mammoth has clad this mattress with a tactile, smooth and beautiful cover, which is so silky soft it is almost a shame to use a bedsheet! This cover fabric is also chosen for its heat management properties, another detail that results in a comfortable and deeper night's sleep.

    The Mammoth Rise Plus mattress is a no-turn mattress, only requiring rotating once per Season (although we recommend this is done more often in the early weeks after delivery). The mattress is delivered rolled up, and will slowly expand (leave for 4hrs) to reveal itself, after which it can be used. Mammoth have covered this mattress with a full 10-year warranty.

    Reviews

    Read Mammoth Rise Plus Mattress Reviews.
    2 Reviews

    1. Stephen Says:
      20%
      Awful mattress, awful warranty.
      Bought this mattress via Next. A little over a year later, my wife started getting pain in her hips, a little after that I was getting a bad back.

      Both started on physio which helped.

      We went on holiday for 3 weeks and as if by magic our aches and pains went away.

      Ok return, weeks later so do our aches and pains, it's the mattress!

      Even after rotating it weekly it has developed dipped areas that don't go away, or are excessively soft causing our bodies to lay in positions which seemingly cause problems.

      Next/mammoth sent out one of their assessors who deemed it general wear and tear, not covered under warranty.

      Waste of money and their extended warranty is not worth a bean.
      Verified Buyer
    2. Superb bed Says:
      100%
      Annie
      Lovely new mattress, exactly what we wanted, no hesitation to recommend to all!
      Verified Buyer

    Frequently Asked Questions -
    1 Answer

    How long does this mattress take to open up fully after we have opened it?

    We would recommend leaving the mattress for around 4hrs after removing the packaging. After that, it should be fine to use!
    Still looking a answer to your questions?

    Delivery Information

    Choose your delivery date at Checkout!

    We deliver on the day of your choice.
    Recycling of your old mattress can be chosen at the checkout.

    Mattresses & Beds

    - 2-3hr time window the day prior to delivery.
    - Live tracking & 30mins notice.
    - Delivery to the room of choice, unpack option can be chosen in checkout.

    Pillows & rolled mattresses

    - 1hr delivery slot.
    - Delivery to the door.

    Free £120 POA
    yearguarantee

    5 Year Guarantee

    This item is completely covered for the 5-Years.
    Any faults reported in the Guarantee period will result in a replacement for you at no cost whatsoever, pending confirmation of the fault by the manufacturer.

    At MyNextMattress, we also go a step further and will offer you the choice of any item on our website, not just a like for like replacement from the same manufacturer. We will also exchange the goods for you at no charge (some offshore delivery costs may apply).

    Think you have a fault or defect with your item? Please get in touch and we will respond straight away with the next steps.

    My Next Mattress Guarantees

    5 Year Guarantee

    This item is completely covered for the 5-Years.
    Any faults reported in the Guarantee period will result in a replacement for you at no cost whatsoever, pending confirmation of the fault by the manufacturer.

    At MyNextMattress, we also go a step further and will offer you the choice of any item on our website, not just a like for like replacement from the same manufacturer. We will also exchange the goods for you at no charge (some offshore delivery costs may apply).

    Think you have a fault or defect with your item? Please get in touch and we will respond straight away with the next steps.

    Glossary

    • Breathability

      Mattresses need to breathe. With the amount of fillings and areas of space within a mattress, they can quickly hold heat and moisture. Over time this can influence the way a mattress behaves and also effect the life span of a mattress. 

      Manufacturers have developed different ways of tackling the problem of Breathability in mattresses. Some brands have used vents to allow air to pass through the mattress. Some brands use state-of-the-art materials to cover the mattress, such as Coolmax or Outlast. Memory Foam has a reputation of storing heat and moisture, as foam requires heat to soften up.Memory Foam brands have overcome this problem by applying Coolmax and Outlast, they also use Open Cell technology. This technique is to simply allow the foam to settle with larger spaces between the foam cells. This allows heat and moisture to move freely without getting trapped.

      Some mattresses are created in such a way that they do not require any additional Breathability methods. These mattresses are generally the entry level mattresses with Open Coil spring units and not a great deal of fillings.

    • Delivery

      Our deliveries are carried out by a small courier outfit called BJS Distribution. We use this company for all Double and Kingsize mattresses and Divan Beds. This service will see all goods taken to room of choice and unpacked, all packaging can be taken away for recycling (upon request). We use NIghtfreight for our smaller products (pillows and headboards etc). Delivery to the room of choice is free!

      We operate a next day delivery service on all our stocked items. If you order before 13:00, you can receive you new mattress, bed, pillow or headboard the following day. Delivery is free!

      Our couriers will speak with you to arrange a delivery timeslot, and also offer an hours notice within this timeframe. With smaller items, on Nightfreight's service, we offer 30mins notice ahead of arrival.

    • Firmness

      MyNextMattress is developing a new and unique solution to the Firmness scale accuracy. Not seen anywhere else in the World, we will be measuring the Firmness of all our mattresses precisely and in detail.

      We are the only company in the Country that will actually measure the Firmness of a mattress and give a grading out of 10. We are always aware that choosing your next mattress can be a difficult and time consuming process, therefore we strive to give as much information as possible on every mattress we sell.

      The way our system works is by applying weight to a mattress. We will apply weight gradually and measure the amount the mattress dips. The more weight, the more the mattress will 'sink'. We would then measure the distance the mattress dips and plot these measurements (weight and distance) on a graph. This graph can then be used to tell us the Firmness category the mattress fits into, 7 out of 10 for instance.

      Our Firmness Device provides a central rod which we apply weights to, on the bottom end there is a disc which pushes into the mattress. The top of this rod supports the weights and will sink according to the 'give' in a mattress. We measure from this point.

      As a result of this unique technique, it will be possible for you to shop by the firmness of a mattress, this is not possible anywhere else.

    • Hypoallergenic

      Put simply, Hypoallergenic materials do not cause the amount of irritation that non-hypoallergenic materials can. Hypoallergenic materials can still cause irritation in some cases, the chances of this are reduced greatly. People with severe allergies and asthma may still have problems with items called hypoallergenic, but the risk is greatly reduced.

      Hypoallergenic materials do not omit the same particles and fibres as other non-hypoallergenic materials. These particles are to blame for causing irritation and discomfort and in some cases the irritation can be dangerous. The Hypoallergenic properties of these materials can be created by number of techniques. Some materials (Memory Foam or Latex) are naturally hypoallergenic, others have been chemically treated.

    • Memory Foam

      Memory Foam was invented by NASA in 1966. The idea was to improve the safety of aircraft cushions, but it was not long before th material was developed further and used in more and more products. Memory Foam is an open cell construction, which reacts to body heat and weight. The more heat applied, the softer the material gets. This, in turn, allows the weight applied to sink deeper. Memory Foam can be made at various densities to result in different tensions/firmnesses.

      The crucial element of Memory Foam is that it softens and moulds to the body shape. This ability allows for very accurate contour support and weight distribution. This ability makes Memory Foam a desirable material for mattresses. Some mattresses are completely Memory Foam, perhaps using different layers of various densities. Some mattresses use Memory Foam to compliment a Spring Unit.

      As Memory Foam requires heat to achieve its desired state, the heat is stored. Some people are not keen on Memory Foam as this heat can gradually build, resulting in a warm bed. However, this stereotype can be seen as outdated, as many manufacturers have solved the issue by applying new techniques to compliment the Foam. Techniques such as Outlast and Coolmax. Memory Foam is also Hypoallergenic and is therefore very popular with Asthma and Allergy sufferers.

    • Tension

      Another word for Firmness.

    • Turn / No Turn

      Some mattresses require turning over, to aid even settlement. Others do not require turning, but will still require rotating.

    • Warranty

      Every mattress we sell comes with at least a 12 month manufacturers guarantee, though most come with much longer guarantees. To find out what mattress warranty is included with your purchase, look out for the rosette on the top right corner of the mattress page. All new goods are sold with a minimum 12-month manufacturers guarantee. Full details are available on request. In addition to the manufacturers guarantee MyNextMattress offers a limited extended mattress warranty. This warranty varies in length item by item. You must keep all your purchase records as they will be needed in the event of a claim. The warranty is applied as follows:

      • The mattress warranty is against faults in manufacture, not wear and tear or damage.
      • The mattress must always be used with a mattress protector, turned and cleaned as per the manufacturers instructions and must be unsoiled at the time that the claim is lodged.
      • The claim must be registered with MyNextMattress by email or in writing. All details of the claim must be lodged with MyNextMattress by email or in writing.

      If the claim is accepted the following process will apply:

      • We will arrange to collect the goods and return them to us for inspection.
      • The carrier reserves the right to refuse to collect items that are not packaged suitably or which is unhygienic.
      • We may require pre payment for the costs of the collection in some circumstances.
      • If we validate the claim we will contact you to arrange the replacement goods to be dispatched to you and delivered to you on a date that is convenient for you.
      • The replacement item can be any item from our then current range.
      • The difference in price from the warranty covered item is payable by you, along with the cost of collecting the original item.

      There will be an allowance granted against the replacement item according to the following scale.

      • If the claim is validated within the first two years - 40% of the original price will be credited.
      • If the claim is validated in year three of the purchase -25% of the original price will be credited.
      • If the claim is validated in year four of the purchase - 15% of the original price will be credited.
      • If the claim is validated in year five or (if warranty is for longer than five years then any subsequent year up to the warranty period) -10% of the original price will be credited.

      The warranty is only applicable to the original purchaser and is only valid if approved by MyNextMattress. It should be considered as extra peace of mind in case of manufacturing defects that arise after the manufacturers mattress guarantee has expired. It should not be regarded as a guarantee that any item will last for any particular period of time, or as a guarantee against deterioration in performance. It is in addition to your statutory rights. There is no entitlement to a cash payment in lieu of the replacement. The replacement item must be at the same or higher price than the original.

    Price Match Promise

    If you find a better price, we will beat it by £5.

    In the unlikely event that you find a price better than ours, worry not - we'll beat it!
    This promise extends from pre-ordering right up to the day of delivery!

    We watch our competitors prices and pride ourselves on being the most competitive online. Therefore, if you don't have the time to hunt around for the best price, order with us and we'll honour our price match promise until you have taken delivery of your order. This leaves you safe in the knowledge that you will take delivery as fast as possible, for the lowest price possible!

    Also, we do genuinely like to know if our prices are being beaten, so please let us know!


    Rated Excellent - MyNextMattress

    Sold Out!

    This item is now sold out!
    We have other similar options and we're on hand to help with recommendations.

    Call us on 0116 274 7545



    Request Callback
    Call for price