AJ Foam King Size Mattresses

If you're looking for high-quality foam mattresses that puts comfort above all else, look no further than AJ Foam Mattresses. Hailing from Dewsbury, UK, AJ has been manufacturing foam mattresses for over 16 years. They put all of their expertise into their latest products, one of which is their king size mattress range you'll find here.

The mattress uses the best quality components to ensure ultimate breathability, meaning you'll never wake up sweaty or too hot. Likewise, they use materials that conform to all fire health and safety regulations, meaning you are fully safe using these products. The mattresses use a combination of memory foam, latex or ortho springs, reflex foam and pocket springs. So whatever you require, you'll find an AJ Foam mattress that you won't be disappointed with. Browse our range to find your perfect mattress, and remember that our delivery options include next day delivery on selected items as well as free delivery on all items.
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  1. Infusion Small Single Mattress Mattress firmness

    Healthflex Kingsize Mattress

    £79.99
    RRP: £149.99 | Save £70.00 (46%)
    • Hypoallergenic
    • Zipped cover
    • 100mm Layer of High Density Base
  2. Infusion Small Single Mattress Mattress firmness

    Healthflex Plus Kingsize Mattress

    £99.99
    RRP: £179.99 | Save £80.00 (44%)
    • Hypoallergenic
    • Zipped cover
    • 150mm Layer of High Density Base
  3. Pebbles Single Mattress Mattress firmness

    Maxicool Kingsize Mattress

    £134.99
    RRP: £199.99 | Save £65.00 (32%)
    • 150mm of Reflex Foam
    • 50mm of Memory Foam
    • Hypoallergenic
  4. Infusion Small Single Mattress Mattress firmness

    Coolmax Kingsize Mattress

    £139.99
    RRP: £199.99 | Save £60.00 (30%)
    • Hypoallergenic
    • 50mm Layer of Memory Foam
    • 150mm Layer of High Density Base
  5. Luxury King Size Mattress Mattress firmness

    Luxury King Size Mattress

    £139.99
    RRP: £219.99 | Save £80.00 (36%)
    • Layer of High Density Base Foam
    • Layer of Memory Foam
    • Anti-bacterial
    Best Seller
  6. Infusion Small Single Mattress Mattress firmness

    Iris king size Mattress

    £169.99
    RRP: £249.99 | Save £80.00 (32%)
    • Hypoallergenic
    • Orthopaedic
    • 250mm Layer of Orthopaedic reflex foam
  7. Infusion Small Single Mattress Mattress firmness

    Jasper King size Mattress

    £169.99
    RRP: £249.99 | Save £80.00 (32%)
    • Hypoallergenic
    • 50mm Layer of Visco elastic memory foam
    • 200mm Layer of reflex foam
  8. Infusion Small Single Mattress Mattress firmness

    Graphite King size Mattress

    £184.99
    RRP: £229.99 | Save £45.00 (19%)
    • Hypoallergenic
    • 25mm Layer of Cool blue memory foam
    • 225mm Layer of reflex foam
  9. Neptune Luxury King Size Mattress Mattress firmness

    Neptune Luxury King Size Mattress

    £209.99
    RRP: £299.99 | Save £90.00 (30%)
    • 50mm Layer of Memory Foam
    • 150mm Layer of Memory Foam
    • Hypoallergenic
    Best Seller
  10. Infusion Small Single Mattress Mattress firmness

    Siam King size Mattress

    £219.99
    RRP: £249.99 | Save £30.00 (12%)
    • Hypoallergenic
    • 50mm Layer of Gelflex
    • 200mm Layer of Reflex foam
  11. Anti Bed Bug King Size Mattress Mattress firmness

    Anti Bed Bug King Size Mattress

    £219.99
    RRP: £299.99 | Save £80.00 (26%)
    • 150mm of Base Foam
    • 50mm of Memory Foam
    • Anti-microbial
    Best Seller
  12. Pluto King Size Mattress Mattress firmness

    Pluto King Size Mattress

    £219.99
    RRP: £319.99 | Save £100.00 (31%)
    • 150mm of Reflex Foam
    • 70mm of Memory Foam
    • Hypoallergenic
    Best Seller
  13. Infusion King Size Mattress Mattress firmness

    Infusion King Size Mattress

    £219.99
    RRP: £319.99 | Save £100.00 (31%)
    • Hypoallergenic
    • 75mm Layer of Memory Foam
    • 125mm Layer of High Density Base
  14. Infusion Small Single Mattress Mattress firmness

    Capri King size Mattress

    £224.99
    RRP: £299.99 | Save £75.00 (25%)
    • Hypoallergenic
    • 50mm Layer of Cool blue memory foam
    • 200mm Layer of reflex foam
  15. Infusion Small Single Mattress Mattress firmness

    Tanzanite King size Mattress

    £229.99
    RRP: £299.99 | Save £70.00 (23%)
    • Hypoallergenic
    • 25mm Layer of Gelflex
    • 175mm Layer of Reflex foam
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