Mammoth Mattress Review

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Written by:

Max Stevens
Mammoth Mattress Review

Mammoth Mattress Review

Right, you’re here because you’re about to make a once-in-a-decade purchase, and you want to know if the Mammoth Mattress is really worth the hype. 

Buying a mattress is a significant purchase – I mean, you spend around 1/3rd of your life on them! 

And buying the wrong one can lead to a raft of health problems like back and neck aches and pains and posture issues. So I’m happy you’re taking your time in searching out for in-depth mattress reviews, rather than rushing and paying for it later! 

These might be some of the questions in your head that we’re here to answer:

  • Are you a sleeper who regularly changes between positions?
  • Do you usually feel hip or back pains when you sleep?
  • Are you a light sleeper that easily gets woken up by bed motions? 
  • Are you looking for a mattress with a balanced soft to firm ratio?
  • Are you looking to get a medical-grade mattress that’s assured to give you a good night’s sleep?

If your answer to all the questions above is a resounding “yes,” then this review is definitely the one you need! We already have a Table of Contents ready right here below for all your needs. 

Just in case you answered “no”, we were also prepared for that. Here are some other mattresses you can check out. One of these may suit what you need! 


Mammoth Shine Advanced – A Brief Introduction

[[Image Insert – Full-width banner image of mammoth logo]] 

Mammoth mattresses claim-to-fame (and almost all mattress brands have this) are two top-of-the-line technologies. 

First off is their Medical Grade Foam, which makes up for the product’s comfort – they claim it has the “perfect firmness” – I mean firmness is subjective but let’s see. 

Then there’s also the Posture Cell technology that maximises the use of carefully arranging springs. This arrangement helps alleviate the mattress’s motion and lets the user get in and out of it with ease. 

In terms of mattress models, they have the Shine Advanced, the most popular and widely available. It’s their mid-tier product, with the Rise series below it and the Move series above it. More on the differences later! 

Mammoth Shine Advanced Medium Pocket Mattress Construction

The Shine Advanced mattress is the top in the Shine series lineup – sitting at 300mm (30cm, 12in) deep with seven PostureCell zones. That’s four more than the Shine Essential and twice more than the Shine Plus. 

Apart from the Shine Advanced Medium Pocket variant, there’s also a Shine Advanced Firmer (with roughly 24-28cm of pure Medical Grade foam) and a Shine Advanced Softer (with 16cm of Medical Grade foam and 6-12cm of SkyFoam to make it softer) variants. 

The depth of the mattress allows for it to carry 7 PostureCell zones, which are appropriately placed in common pressure point areas to provide additional support. 

Mammoth boasts it can handle weights up to 40 stone. They hoped that this would make them suitable for all weights.  

[[Image Insert]] – Custom 50/50 illustration showing cross-section of mattress plus illustration description

Moving forward to deep technical introspection for the mattress, it’s 30cm deep with 4 layers: 

  • A non-removable cover made of Tencel fibres 
  • PostureCell layer that’s 9cm tall. It allows for maximum comfort, support and cooling
  • 3000 comfortable pocket springs surrounded by Medical Grade foam, providing more edge support 
  • A supporting layer of Medical Grade foam at the bottom.

My Overall Performance Ratings



Generic Description



Back Sleepers


Side Sleepers


Front Sleepers


Combo Sleepers


Hot Sleepers




Edge Support


Moving forward into the review, from the unboxing, the use, and going so far as talking about how it works and feels in the longer run. So, let’s get to it! 

Off-Gassing & Unboxing

Off-gassing is that weird chemical smell you get from new mattresses after unpacking them, although much more prominent in mattress-in-a-box, like Simba and Emma.

The Shine Advanced comes in an airtight seal, so there was a slight odour, but nothing a well-ventilated room couldn’t handle. However, if you have the space, then I’d let it ‘air’ out for a couple of days before spending your first night on it. 

[[Image Insert]] – Full Custom Illustration representing mattress off-gassing. E.g. mattress and person in a room, and mattress delivery box, with odour coming off the mattress? 


We’re at the tricky part of the review, as the firmness of the mattress depends on your weight, size, and shape.

For example, a plus-sized person would find a mattress relatively softer than a lighter person. So to fix this, I’ve reviewed all possible weights and types! 

[[Image Insert]] – Full Illustration of 3 beds, with 3 representations of light/average and heavyweight sleepers. Each with a speech bubble saying “I’m lightweight and find this firm” “I’m average weight and I find this medium to firm” “I’m heavyweight and I find this medium firmness.” 

One thing: it almost always boils down to you actually trying the product and figuring out if it is or it’s not for you. With most mattresses having trial periods, it’s wise to make the most out of that. 

So how firm is the Mammoth Shine Advanced for me?

In my own experience, as a person that weighs about 75kg (165 pounds), the Mammoth Shine Advanced Medium Pocket actually felt quite good for me. I’d put it at the 7.5 firmness as it’s advertised as. 

It sits at a feel that’s comfortable, yet it doesn’t seem as if the mattress is trying to swallow you. It also doesn’t feel too firm that it feels like you’re sleeping on a hardboard. 

The PostureCell zones are pretty effective, as it gives way to your body to contour along with it, but it firmly supports your head and feet. 

Generally, I prefer this type of firmness, as anything too stiff is uncomfortable for me, and anything too soft makes me feel like I’m drowning. 

[[Image Insert]] – Custom Illustration showing firmness scale with a representation of the firmness rating

Firmness Rating: 7.5/10

Is it Good for Backsleepers?

What back sleepers need: Medium-firm to firm

Pressure Point: Lower Back

[[Image Insert]] — 3 beds, 3 sleepers, all in back sleeping position, all with speech bubbles variations: 1) “This mattress is great for me!” “This mattress wasn’t firm enough, and my spine wasn’t aligned”, and then CTA saying, “Read Why Below” 

If you lie on your back when you sleep, it’s recommended to purchase a medium-firm mattress to firm feel (6.5-8). Ensure that your spinal alignment is neutral and staves off any back/neck pains when you wake up. 

Average weight Back sleeper: Between 59-104kg (130-230lbs)

Truth be told, the Mammoth mattress managed to remedy my backache problems. Upon quick inspection, it’s probably the PostureCell zones that helped. It was more firm on the shoulders and legs and lighter and more adaptive on the spine area. 

Lightweight Back sleeper: Less than 59kg (130lbs)

The medium-firm option might be divisive for you if you’re a lightweight. It varies if you like how it feels on you, so I think it’s best to try it.

But for a valid second opinion, my 42kg girlfriend actually likes this mattress. We, more or less, have the same opinion about how it works on the back, and the PostureCell zone is its biggest strength. 

Heavyweight Back sleeper: More than 104kgs (230lbs)

The product claims to be comfortable for people up to 40 stone. This weight is far beyond the 104kgs, or 230lbs indicated on the title of this subsection. 

The medium firmness of the mattress makes it able to fight back against your weight accordingly. It does this by not letting you sink in too deep to be uncomfortable for use. 

Rating: 4/5

Is it Good for Side sleepers?

What side sleepers need: Very soft to medium soft

Pressure Point: Shoulder

[[Image Insert]] — 3 beds, 3 sleepers, all inside sleeping position, all with speech bubbles variations: 1) “This mattress is great for me!” “This mattress wasn’t firm enough, and my spine wasn’t aligned”, and then CTA saying, “Read Why Below” 

If you sleep on the side, you should be looking for a relatively soft mattress, so your shoulders can comfortably sink into the mattress. If the mattress fights against your shoulders, that can cause spinal misalignment, causing trouble to your sleep and possible aches/pains. 

Average weight Side Sleeper: Between 59-104kg (130-230lbs)

Despite its medium-firm feel, the Mammoth mattress has loads of customer feedback on helping their neck and hip pain. They do this by supporting all the pressure points needed for sleep. This mattress really knows how to deliver, but it’s not so surprising given its price tag.

Lightweight Side Sleeper: Less than 59kg (130lbs)

The Mammoth may still be okay if you’re a lightweight whilst needing a slightly softer mattress. It wouldn’t feel like it’s pushing you away, as the mattress gives in accordingly given the PostureCell technology. 

If anything, it just about allows you to sink with your weight, contouring on all the necessary pressure points. 

Heavyweight Side Sleeper: More than 104kgs (230lbs)

Heavyweight sleepers like falling asleep on their sides would have no problem with this mattress. In fact, this just might be the mattress that they’d ultimately find comfort in, as the Medical Grade foam and 3000 springs work hand in hand. A heavier person applies more pressure to the mattress, but the springs and memory foam alleviate the pressure quite well. 

Rating: 4/5

Is it Good for Front Sleepers?

What front sleepers need: Medium Firm to Firm

Pressure points: Stomach and Hips

[[Image Insert]] — 3 beds, 3 sleepers, all in front sleeping position, all with speech bubbles variations: 1) “This mattress is great for me!” “This mattress wasn’t firm enough, and my spine wasn’t aligned”, and then CTA saying, “Read Why Below” 

Being able to sleep comfortably on your front requires an excellent mattress, in my opinion. It’s not easy to figure out the best mattress that’s able to support your stomach, especially when there’s breathing involved that pushes your body further into the foam.

Average Weight Front Sleeper: Between 59-104kg (130-230lbs)

As I’ve tried to sleep on the Mammoth flat on my stomach, I’d give it just a meh feeling. Not an overly impressive feeling, but not that ‘bad’ a feeling.

I think the problem is that there isn’t enough ‘zoned’ support around the stomach area, and that’s why I felt my lower back sinking into the mattress. 

Lightweight Front Sleeper: Less than 59kg (130lbs)

If you sleep on the front as a lightweight, this mattress would be able to do the job for you. The medium firm PostureCells make it easy to adapt on any side of the body that falls on it, no matter the person’s weight. Even if the person sleeping is a lightweight, it sinks accordingly but not too awkwardly, ultimately making up for a pleasurable night of sleep. 

Heavyweight Front Sleeper: More than 104kgs (230lbs)

This one is tricky, as they’re definitely would be more meticulosity when it comes to sleeping on the front with more weight. Every breath in and out can be felt on the mattress, but the triple layer of the Mammoth makes it seem as if it’s no problem at all.

The PostureCell first layer easily adapts to the body. The springs on the third layer take the grunt of the weight to let it sink accordingly. At the same time, the Medical Grade foam in the middle assures support for the body and enough firmness for a proper hold. 

Rating: 4/5

Is it Good for Combo Sleepers?

What combo sleepers need: A bit of a bounciness 

[[Image Insert]] — 3 beds, 3 sleepers, all in combo sleeping position, all with speech bubbles variations: 1) “This mattress is great for me!” “This mattress wasn’t firm enough, and my spine wasn’t aligned”, and then CTA saying, “Read Why Below” 

Occasionally I’m a bit of a toss and turner when I’m trying to get to sleep, and the Mammoth actually did a good job helping me with this. 

I think the cushioning on the top also does an excellent job in providing that ‘bounce’ needed for a frequent position changer, and I’d be happy to recommend it if so. 

Rating: 4/5

Is it Good for Hot Sleepers?

[[Image Insert]] — Illustration of a hot sleeper with 2 sides representing ‘Is it good for hot sleepers?” “Yes” and “No”

Some mattresses tend to make you feel hot when you sleep, especially when the material is too dense and lacks ventilation. The most common cause for this would be memory foam, as the material tends to feel hot to the touch. 

The Mammoth’s PostureCell technology makes use of the V-cell structure to not only provide comfort but also give proper ventilation. This allows your heat to dissipate, so if you’re a hot sleeper like me, then you’ll welcome this. 

Fair note, though. It makes the mattress have only one correct side to lie and sleep on.

Rating: 4/5

With A Sleeping Partner

[[Image Insert]] — Illustration of a couple sleeping with 2 sides representing ‘Is it good for couples?” “Yes” and “No”

The critical thing to consider in sharing a mattress is motion transfer, as you don’t want to disturb the other person in the bed. Imagine moving in and out of bed when your better half is fast asleep! 

There’s also a point where “roll-together” comes into play when there’s not enough support, and you begin to roll into each other in the middle. Sounds cute, but let’s be real here. 

Fortunately enough, this wasn’t a problem on the Mammoth mattress, as partners can cuddle all they want with no issues of sinking. I mean, that’s the case for my girlfriend and me at least! 

Rating: 4/5

Edge Support

[[Image Insert]] – 50/50 Stock and Illustration of Illustration sitting on the edge of the bed 

We all sit on the sides of our beds, whether choosing clothes, putting on socks, or you need to check something on our phone. This means you’re looking for a mattress with good edge support, which also means you can roll right to the edge!

For the case of the Mammoth Shine Advanced, it actually does a great job of keeping things on edge (get it?). It holds very well when sat on, and the medium-firmness makes sure it’s not flimsy nor too hard. 

Rating: 4/ 5

Best Features

For me, here are the three best things about mammoth mattresses: 

  • Zoned support really helped
  • Handles made it easy to rotate
  • Did provide some quite good comfort

What really works for the Mammoth is a hybrid technology that gives a medium-ish firmness. 

Also, it has handles on all sides for ease of transfer, especially since there’s some weight to the mattress. It’s perfect for any position to sleep in, with everything else working as a bonus.

The Medical Grade foam and the PostureCell technology may seem like a hard sell that keep pushing consumers. I can simply not argue how much it makes a difference to my sleeping. 

Mattress Rating  

With all that’s been said, here’s a quick recap of all the ratings we gave the Mammoth mattress for you to quickly and easily decide if it is for you.

  • Off-gassing – 4/ 5
  • Firmness – 5/ 10
  • Back sleepers – 4/ 5
  • Side sleepers- 4/ 5
  • Front sleepers- 4/ 5
  • Combo sleepers- 5/ 5
  • Hot sleepers – 4/ 5
  • With partner – 5/ 5
  • Edge support – 4/ 5

Parting Words

We hope you found what you were searching for earlier today before you stumbled into our website. We hope you find the mattress you are looking for sooner or later.

So, here are some types of sleepers this mattress can work for: 

  • Combo Sleepers
  • Couples
  • Hot Sleepers

That encapsulates everything for the Mammoth mattress! I hope you find comfort in our words as much as you would in the perfect mattress. 

Helping you, my readers, are a great way to bring some good out of the footie injury I’ve shared with you at the beginning of this post.

If you’re looking for some more mattress suggestions, you can always check for more on the website by clicking over here.  

Written by:

Max Stevens