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Mammoth bHealthy Active Foam Mattress

Now: £299.99
Was: £349.99

SAVE £50

Estimated delivery 7 - 14 working days subject to location and availability - FREE Standard all day delivery service

Learn more about this product...

Product Code: 728020002

  • Designed specifically for healthy growing children
  • Made with Mammoth Medical Grade™ foam technologies
  • 14cm Reflex Foam for Ultimate Support
  • 4cm Medical Grade™ Posturecell foam
  • Soft stretch knit fabric cover for added comfort
  • Soft woven fabric sleep surface, gentle for sensitive skin
  • Developed and Endorsed by Health Professionals
  • Chemical treatment free*
  • Available in Single, Small Double & Double
  • Comfort rating: 3 medium
  • Exclusive to Bensons for Beds
  • 10-year guarantee
  • Made in the UK

The bHealthy kids Active mattress is the perfect way to start investing in your child's sleep. A really supportive core is topped with 4cm of Mammoth's naturally cooling Medical Grade™ foam and wrapped in a soft, breathable cover.

The bHealthy range has been designed in conjuction with and exclusively for Bensons for Beds, to support children's physical, mental and social development.

Each mattress features Mammoth's sleep technologies, which help to get your kids to sleep faster, keep them asleep for longer and leave them fully refreshed when they wake.  


All bHealthy mattresses contain Mammoth's unique Medical Grade™ foam which was developed for healthcare to relieve pressure and help regulate body heat. It is not sensitive to temperature so it won't heat up and neither will your little ones. Delivering a cool and comfortable night's sleep and returning people to good health.

Help your children live their best life with Mammoth and Bensons for Beds.

Due to safety regulations and the increased depth of 18cm on this product, we do not recommend you purchase this mattress to use in conjunction with High/Mid Sleeper beds or for the top bunk of Bunk Beds.

*This applies to the mattress cover only.



Assembled Dimensions

  1. Mattress Depth - 18cm
  2. Mattress Length - 190cm
  3. Mattress Width - 135cm

Mattress Size Guide

Nothing should get in the way of you enjoying your new bed or mattress. When it comes to finding the perfect mattress, you need to firstly know how big you can go. Here's a basic guide to UK standard mattress and divan bed sizes to help you make the most of your bedroom space:

Bed SizeFeet & InchesInchesCentimetres
Small Single2'6" x 6'3"29.5" x 75"75 x 190cm
Single3' x 6'3"36" x 75"90 x 190cm
Small Double4' x 6'3"48" x 75"120 x 190cm
Double4'6" x 6'3"54" x 75"135 x 190cm
King5' x 6'6"60" x 78"150 x 200cm
Super King6' x 6'6"71" x 78"180 x 200cm

Please note

  • Metric and imperial sizes are not exact equivalents
  • There can be a tolerance of +/-2cm (+/-0.8ins) with all quoted measurements

Need more information on bed sizes? Unsure if your new bed will fit in your bedroom or go up your staircase? Check out our complete Bed and Mattress Size Guide



FREE DELIVERY ON ORDERS OVER £100 - all beds, mattresses and furniture items are also delivered, not just to your front door, but to any room of your choice. Don't worry, we'll take every care carrying your new bed through your home (but we also recommend that you move valuables such as vases and wall hangings out of the delivery path). You can check out our home measuring guide here for advise on how to measure your home prior to your delivery.

Please be aware that our Standard delivery times are on Monday to Friday between 7am and 6pm depending on your location within the UK. You will receive a call from our Customer Services team to arrange your perferred time slot.

For divan beds, we can also professionally assemble your bed for you. For £20, We will unpack and fully assemble your new divan bed plus assemble and fit your new headboard (if purchased and delivered with your bed). We'll also clear away all unwanted packaging and recycle it to ensure you're ready for a good night's sleep:


If you have any questions or concerns regarding your delivery you can call us FREE on 0333 222 6800 or email us on



This mattress will arrive rolled up and wrapped in plastic. To unpack, simply remove packaging making sure not to damage the mattress, unroll and wait an hour or so for it to expand.

Remember to recycle the plastic packaging accordingly and to keep away from children.

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