King Koil Exton Firm – King


Experience a deep and rejuvenating night’s sleep when the Exton firm mattress responds to every inch of your body’s curves each and every night. Sophisticated designs and construction along with the latest in responsive and conforming foam technologies resting on responsive pocketed coil system, is why you will fall in love with sleep again.

Box Spring or Adjustable Base

Please allow 1 to 2 weeks for the special order products to arrive

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Focused and Firm

As the name suggests, the Exton Tight-Top Firm Mattress ranks high on the firmness scale, offering a supportive, sturdy surface as you sleep. Here are some of the benefits of firm mattresses:

  • Even weight distribution: Firm mattresses rarely sink, which helps keep the spine in a safe position and reduces the risk of backaches.
  • Coolness: Firm mattresses are less likely to retain body heat, which helps keep the user refreshingly cool during the night.
  • Better circulation: Using a firm mattress can promote airflow, making it easier to breathe and improving your blood flow.
  • Durability: Because firm mattresses are less likely to sink, they tend to last for long periods of time.

Firm mattresses are especially useful for back and stomach sleepers, as these positions are more likely to make a mattress weigh down. They’re also beneficial if you struggle with overheating or if you want to enhance your blood circulation.

Custom Contouring

If you’ve ever woken up with an aching back, that’s a sign that your mattress is not offering you the support you need overnight. The Exton Tight-Top Firm Mattress meets the unique needs of every individual by utilizing an 858 ContourFlex Pro Encased Coil System. Here’s what it can do:

  • Reduce motion disturbance
  • Relieve body pressure points
  • Support weight distribution

As you sleep, 858 independently encased coils will be there to support you. In addition to relieving pain areas, these coils can adjust to new weight as you shift, lowering the likelihood of being disturbed during the night.

Tailor-made Tufting™

During the mattress manufacturing process, we perform tailor-made tufting to protect the mattress layers and ensure they stay together. This prevents layers from shifting and sagging over time, leading to decades of comfortable, consistent sleep. In addition to tufting, the mattress comes with the following amenities:

  • Upholstered Border Fabric
  • Embroidered Handles and Labels
  • Double Vertical Stitch
  • Self Welt Tape Edge

A Hypoallergenic Haven

Things like mold, mildew, and bacteria tend to grow in warm, humid environments, such as mattresses. These substances can accumulate on your mattress without your knowledge, consequently interfering with your sleep and triggering allergies. At King Koil Mattress Co., we use hypoallergenic materials to discourage harmful microbes. Our Exton Tight-Top Firm Mattresses incorporate the following:

  • Natural Talalay Latex: This quick-acting, all-natural latex is hypoallergenic and provides pressure point relief.
  • Natural Cotton: Our hypoallergenic cotton promotes airflow and keeps you refreshingly cool as you sleep. The mattress also uses silk and wool to boost comfort.
  • Anti-Microbial Safeguard Fibers: These fibers provide protection against harmful microbes that might otherwise collect on your mattress.

These different technologies work together to promote your health, safety, and comfort. Our ultimate goal is to help ensure you have a peaceful, sneeze-free night of sleep.


Additional information





Mattress Type

Memory Foam

Available Sizes



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