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

    Garnet King size Mattress

    £229.99
    RRP: £299.99 | Save £70.00 (23%)
    • Hypoallergenic
    • 50mm Layer of Gelflex
    • 150mm Layer of High Density Base
  2. Infusion Small Single Mattress Mattress firmness

    Crystal King size Mattress

    £229.99
    RRP: £299.99 | Save £70.00 (23%)
    • Hypoallergenic
    • 75mm Layer of Gelflex
    • 175mm Layer of High Density Base
  3. Infusion Small Single Mattress Mattress firmness

    Topaz Kingsize Mattress

    £229.99
    RRP: £349.99 | Save £120.00 (34%)
    • Hypoallergenic
    • 25mm Layer of Memory Foam
    • 175mm Layer of High Density Base
  4. Infusion Small Single Mattress Mattress firmness

    Ruby Kingsize Mattress

    £229.99
    RRP: £399.99 | Save £170.00 (42%)
    • Hypoallergenic
    • 50mm Layer of Memory Foam
    • 150mm Layer of High Density Base
  5. Infusion Small Single Mattress Mattress firmness

    Cloud King size Mattress

    £234.99
    RRP: £349.99 | Save £115.00 (32%)
    • Hypoallergenic
    • 75mm Layer of Cool blue memory foam
    • 175mm Layer of reflex foam
  6. Luxury Single Mattress Mattress firmness

    Gelflex pocket king size Mattress

    £239.99
    RRP: £299.99 | Save £60.00 (20%)
    • Water bed feel
    • 50mm layer of gelflex
    • 1000 foam encapsulated pocket springs
  7. Infusion Small Single Mattress Mattress firmness

    Emerald King size Mattress

    £239.99
    RRP: £349.99 | Save £110.00 (31%)
    • Hypoallergenic
    • 25mm Layer of Cool marble foam
    • 25mm Layer of 4g Revo memory foam
  8. Infusion Small Single Mattress Mattress firmness

    Sienna King size Mattress

    £239.99
    RRP: £349.99 | Save £110.00 (31%)
    • Hypoallergenic
    • 25mm Layer of Gelflex
    • 50mm Layer of Cool blue memory foam
  9. Aloe Vera Natural Single Mattress Mattress firmness

    Pocket ortho King size Mattress

    £249.99
    RRP: £299.99 | Save £50.00 (16%)
    • 50mm Layer of Reflex Foam
    • 1000 foam encapsulated pocket springs
    • Hypoallergenic
  10. Infusion Small Single Mattress Mattress firmness

    Viola King size Mattress

    £249.99
    RRP: £349.99 | Save £100.00 (28%)
    • Hypoallergenic
    • 50mm Layer of Cool marble foam
    • 50mm Layer of memory foam
  11. Infusion Small Single Mattress Mattress firmness

    Sapphire King size Mattress

    £259.99
    RRP: £349.99 | Save £90.00 (25%)
    • Hypoallergenic
    • 50mm Layer of cool blue memory foam
    • 25mm Layer of latex
  12. Infusion Small Single Mattress Mattress firmness

    Montana King size Mattress

    £269.99
    RRP: £349.99 | Save £80.00 (22%)
    • Hypoallergenic
    • 50mm Layer of latex
    • 200mm Layer of Orthopaedic reflex foam
  13. Infusion Small Single Mattress Mattress firmness

    Azure King Size Mattress

    £269.99
    RRP: £399.99 | Save £130.00 (32%)
    • Hypoallergenic
    • 50mm Layer of natural latex
    • 50mm Layer of memory foam
  14. Infusion Small Single Mattress Mattress firmness

    Cobalt king size Mattress

    £279.99
    RRP: £399.99 | Save £120.00 (30%)
    • Hypoallergenic
    • 25mm Layer of gelflex
    • 175mm Layer of reflex foam
  15. Neptune Luxury Small Single Mattress Mattress firmness

    Cool Memory Pocket King Size Mattress

    £289.99
    RRP: £349.99 | Save £60.00 (17%)
    • 50mm Layer of Cool blue Memory Foam
    • 1000 encapsulated foam pocket springs
    • Premium Quality
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