Mammoth Double Rise Plus Mattress

  • Now £499.99
  • (Delivery or Collection Available|
  • RRP £899.00

Mattress Support: 40mm of Award Winning Naturally Cooling Medical Grade™ Foam and PostureCell® Technologies

Mattress Cover: Hypoallergenic Soft Stretch Knit with Breathable Airmesh Border

Comfort Fillings: 3 Comfort Zoned Support Medical Grade™ Foam and PostureCell® Technologies

Comfort/Firmness: Firm feel

Mattress Sizes: Available in Single, Small Double, Double, King, Super King

No turn: One sided - Rotate Head to Toe - 180 Degrees

Guarantee: 5 Year Guarantee Plus 5 Year Warranty on Registration

Mattress Depth: 24cm

Manufacturers Origin: UK

In Stock: Catterick Store

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Want to know more

  • The Rise Plus mattress is 240mm in depth with 40mm of naturally cooling Mammoth Medical Grade™ foam.
  • Highly regarded and endorsed by numerous sports professionals (including The Chiropractors association) for its comfort and pressure relief when recovering from sporting injuries and aches and pains associated with poor sleeping surfaces.
  • The Medical Grade Foam also has natural cooling qualities to regulate your body temperature during sleep. It has V-Cut castellations cut into the surface of the foam which encourage airflow through the mattress.
  • Provides a zoned support for increased weight distribution with minimal disturbance to other parts of the mattress.
  • The Rise Plus has a firmer feel with Mammoth’s naturally cooling Medical Grade Foam, (scientifically tested and shown to improve sleep) for more comfort, layered on top of a highly supportive foam base and all wrapped up in the sumptuous Rise quilted cover.
  • Redefining the roll-up mattress, the Mammoth Rise Plus mattress offers exceptional comfort that arrives conveniently rolled up and ready to use in just two hours.

 Medical Grade™ Foam and PostureCell® technology are:

  • Scientifically tested and shown to improve comfort and sleep.
  • Recommended by health professionals to encourage relaxation and help ease aches and pains – including back pain.
  • Used by elite athletes and professional sportsmen and women to increase rest and recovery so they can train longer and perform better.
  • Being well rested and comfortable optimises health and wellbeing and is scientifically proven to extend life, and Mammoth know first hand how life changing it can be.
  • That’s why Medical Grade™ Foam provides you with plenty of pressure relieving postural support through its PostureCell® technology. It is naturally cooling – so it won’t heat up and neither will you. It’s also hypoallergenic.

About the brand

About the brand

 Why we love Mammoth

About the brand


We don't deliver to the whole of the UK yet. Our dedicated delivery specialists operate within our North Yorkshire & Surrounding area and not only deliver directly to the door of the lovely people of our region but also make sure your order is in the room it needs to be in.

For as little as £20 you can get your bed delivered to your home or even choose to COLLECT in store for FREE. 

We Care About You

We understand that a busy lifestyle often means our customers can't always wait in all day for a delivery to arrive. We know you've got more important things to do. So we always aim to give you plenty of notice and arrange a time that is convenient, usually a 2-3 hour time slot between 10am - 5pm on a Monday - Friday.  

We care about Service

We can even try and accommodate an early morning delivery before you go to work. And on request, we can give you a call to let you know we're on our way. It's fair to say our delivery team are the unsung hero's and always strive to make your delivery experience run as smoothly as can be and may even pre-empt any issues before they arise. 

We Deliver to Yorkshire Areas Only

To make sure we offer the very best service we like to use our own delivery team. Our in-house delivery specialists have years of experience and at present we deliver within 50 miles of our Yorkshire stores - Catterick Garrison, Ripon & Northallerton. This is to ensure we offer the best experience to our customers. We also care about our carbon footprint and do our utmost to be as efficient and eco-friendly where possible.


Our aim is to be completely transparent. Free delivery generally means the cost of delivery is quite often bulked into the price somewhere. We could offer free delivery, but we want to be honest and not hike up our our prices.


FREE COLLECTION - Collection from one of our stores (Catterick Garrison, Ripon or Northallerton) can also be arranged.

The cost of delivery is worked out by your delivery postcode and not by item. Your delivery charge will be calculated at check out.


We deliver in our local North Yorkshire and surrounding region. We have 3 stores based in Yorkshire - Catterick Garrison, Ripon and Northallerton. We can deliver within a 50 mile radius of our stores. Please feel free to call if you live within this area and would like a delivery cost.


Most of our products are made to order. However we do like to keep some items in stock for your convenience. For in stock items we aim to deliver in 5-7 days, but if you require super fast delivery, just give us a call and we can see if we can help.


We have a wide range of beds and mattresses in varying sizes, not to mention colours, fabrics and storage options, so we couldn't possibly hold everything in stock. Depending on supplier, delivery can take anytime from 1-2 weeks up to 6-8 weeks. Approximate lead times are quoted for all items. Please check first with us if you require an item for a certain date and we can guide you on the most suitable product.


If items show in stock, please call us first before you set off to collect an item, as we have storage and warehouses at each of our store locations (Catterick Garrison, Ripon or Northallerton). We don't want you to make a wasted journey. We can also get your order ready prior to your arrival - saves you hanging around.


We know that not everyone has the best access to their property. That's why we only use Mercedes Sprinter vehicles to deliver you your order, big enough to transport your new bed and small enough to navigate Yorkshire's unforgiving stone walls and tight rural roads. To help determine if our delivery team will be able to access your home with ease, here are our delivery vehicles dimensions. 


Whether you've shopped online or bought in store, the best thing to do is give us a call on 01748 830888 or visit your local store. We'll be happy to help in any way we can and hopefully put things right for you.

If you've shopped online you are able to cancel your order up to 14 days of receiving your order to arrange a collection or exchange (with the exception of any made to order items). You do not need to give us any reason for cancelling your contract nor will you have to pay any penalty. Please bear in mind if you wish for your items to be collected by Simply Beds® transports, a charge will be incurred, this will be charged at Simply Beds® standard rate.

It’s a little different for in store orders so be sure to check with your local branch about cancellation and returns. Get in touch with your local store who’ll be happy to help.

If you would like to read our full terms and conditions, please feel free to browse them here - Returns & Cancellations.


At Simply Beds, making a payment is quick and simple and therefore, we accept the following payment methods. If you can't see your preferred payment option, just give us a call on 01748 830888 and we will see if we can help you. Before proceeding, please make sure your method of payment is valid and that your PayPal account details match your actual delivery address.

To see more information about Simply Beds' Finance options please visit 0% Finance & Payment Options page.


Our aim is simple. We have 5 priorities that keep us focused. Everything we do, we do from the heart and with passion, ensuring we deliver our ‘Good night, Great morning’ spirit.

 We know that without you, our lovely customers; we would not be here.

We strive for laid back smoothness in every part of our Simply Beds life.

 A real family business that understands the importance of working together.

We just love to find new ways to make your sleep better.

 It is our duty of care to do the right thing. We like to sleep well at night!