Layers of innovative foams for pressure relieving and cooling comfort. Zoned, encased steel coils for strength and durable performance. Together, they harmoniously combine the best of their properties to provide you a consistent sleeping experience year after year.

Xtended Life King Koil mattresses are designed and built in the USA since 1898. Click here to learn more about King Koil.

The Xtended Life mattress collection from King Koil promises years of consistent comfort, durable support and backs it up with an impressive 25 year warranty.

Features vary among models

  • Quilt: Superior High Density Foam
  • Insert:Graphite Plush Talalay Latex
  • Upholstery:iNergex
  • Coil:1022 Perfect Contour® Reaction (PCR) Coil System
  • Edge:Excellent Edge™ Foam Encasement
  • Base:Everlast® Base Foam
  • Foundation:Natural Wood Foundation
  • Warranty:25 Years - 15 Year non-prorated & 10 year prorated - 1/2" body impression

Reduced Motion Disturbance
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Enjoy an undisturbed night's sleep with our individually encased coil system. These independently wrapped coils conform to your body's curves while reducing any sense of motion if your partner decides to move or get out of bed.

Expanded Sleeping Surface
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Our Excellent Edge™ Foam Encasement provides greater stability, a firm seating edge and larger, more usable sleeping surface.

Rapid Response Foam
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Enjoy the feeling of “sleeping on” our mattress and not the sinking, “sleeping in it” feeling with our iNergex3 Foam technology. Our iNergex3 foam is an energetic foam that is a highly breathable, cool and responsive. This pressure relieving foam conforms like memory foam but is highly resilient like latex, giving you the best performance of both foam technologies.

Pressure Relieving Support
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This King Koil mattresses offers foam and coil technologies that help relieve pressure points to reduce tossing and turning, resulting in a more comfortable and supportive night’s sleep.

Proudly Designed and Built in the USA
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King Koil has designed mattresses in the USA since 1898.

Individualized Support and Comfort
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Within King Koil's exclusive Perfect Contour® Reaction (PCR) Coil System, there are over 1000 Active and Reaction coils working together to comfortably support each individual body shape and size to improve postural alignment while reducing motion disturbance.

Strength & Durability
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The Xtended Life collection uses only the most durabile and highly resilient foams to assure you years of comfort and support.

Adjustable Base Friendly
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Enjoy an even healthier night's sleep with this adjustable base compatible mattress design.

Temperature Regulation
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Graphite Talalay Latex – Graphite, a natural mineral, is infused with latex to enhance the resiliency and durability for pressure relieving comfort while helping wick away moisture and heat from your body for an optimal sleeping temperature surface.

Proper Spinal Alignment
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King Koil is the only mattress manufacturer that is endorsed by the International Chiropractors Association (ICA) to help promote proper spinal alignment and a healthier night’s sleep.

Tencel™ Fibers
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The mattress comfort surface incorporates Eco-friendly Tencel fibers, derived from sustainable wood sources that promote the body’s natural thermal regulating mechanism, deter bacterial growth and enhance breathability by efficiently absorbing moisture. Tencel is durable yet gentle on the skin to provide long-lasting comfort and an optimal skin climate.

Pressure Equalization
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King Koil’s Perfect Contour® Reaction Coil System maximizes positive pressure by increasing support to your lower back while minimizing negative pressure around your hips and shoulders, also known as pressure equalization. This approach is ideal for blood circulation and muscle relaxation to reduce tossing and turning, while maintaining a healthy night time sleeping posture.

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