King Koil World Extended Life Collection Review

Editor’s Note: King Koil has changed many of its collections over the years, including discontinuing the Extended Life Collection. If you’re after a similar luxury mattress collection, I’d recommend checking out the Stearns & Foster Lux Estate Mattress Collection.

Looking for a mattress that will last a long while? Check out King Koil’s mattress collection called World Extended Life. The meaning behind the message is that this mattress collection will provide years of long-lasting comfort and support for all types of sleepers. Continuing reading to learn about the long warranty, along with all the ins and outs of the mattress itself.

The Company: King Koil

King Koil has been around for a long while — since the 19th century in fact! Just barely, though: The company was founded in 1898 by a man named Samuel Bronstein. Back then, King Koil was actually called United States Bedding and was based out of St. Paul, Minnesota. The team of six quickly grew, along with the number of mattresses it manufactured. By 1900, United States Bedding perfected its coil system and cleverly renamed to King Koil — get it? Today, you can find King Koil in 90 countries around the world. They are headquartered outside of Chicago, Illinois. King Koil offers a mix of innerspring, hybrid, and memory foam mattresses that are bundled into five different mattress collections.

Now, to World Extended Life!

King Koil World Extended Life: Construction

The King Koil World Extended Life collection features one mattress, called Athens, which comes in three comfort levels: extra-firm, plush, and push Euro top. Let’s take a deeper dive into how these mattresses are alike and dissimilar, along with what’s inside the bed:

Athens Extra-Firm, Plush, and Plush Euro top

Cover: The cover of the Athens mattress is a high-density foam, which has a strong cell structure that makes the material durable and long-lasting — part of the “World Extended Life” promise. It is wrapped in soft, eco-friendly Tencel which is also designed to keep you cool while deterring bacteria. In general, Tencel is known for being gentle on the skin while still durable.

Comfort layer: The comfort layer will be quite thick if you’re choosing the plush version, or a bit on the thin side if you’re looking for something more firm. Either way, it will be composed of graphite Talalay latex; the graphite is a natural mineral infused with latex to enhance resiliency. Meanwhile, it also aims to provide pressure relief while wicking away moisture to keep you cool.

Coil system: The coil system for this mattress is similar to the one found in the King Koil World Intimate Collection. It features King Koil’s Perfect Contour® Reaction (PCR) Coil System, stocked with 1,000 coils that are individually wrapped. It’s designed to isolate motion, improve posture, and provide all-around support. This coil system also does something King Koil calls “pressure equalization,” which is when there is extra support aimed at the shoulders, hips, and lower back. The effects of this pressure relieving technology also claim to relax the muscles while reducing the need to toss and turn throughout the night. =

Edge support: Every model includes an Excellent Edge™ Foam Encasement to provide stable and solid edge support.

Base: The base is made from Everlast® Base Foam, a high-density poly foam so the coils have a base to press off of. This comes with a natural wood foundation.

King Koil World Extended Life Feel

Each model in the World Extended Life collection will feel different depending on if you choose the extra-firm, plush, or Euro top options. If you’re a firm bed lover, the extra-firm is one of the sturdiest beds you can find from King Koil, scoring at an 8 out of 10 on the firmness scale (10 being the most-firm). If you want something super soft, the plush version will be calling your name. For a nice middle-ground, the Euro top is about a 5 out of 10 on the firmness scale; typically, medium-firm beds work well for side-sleepers, so if that’s you (over 60 percent of Americans say they are!) then the Euro top could be your best bedding bet.

Let’s stay with the Euro top for a second. In case you’re unfamiliar, Euro top mattresses use a plush combination of soft and supportive material, and tend to be softer than pillow top options. The topper is stitched right into the top layer of the mattress all the way to the edge, helping you feel much more supported at the end of the bed. All in all, the Euro top Athens mattress will be plush on top with a supportive and firm coil core, striking a nice balance of cushion and strong support.

All of the mattresses should feel pretty soft to the touch, thanks to the Tencel used in the cover’s fabric. In case you’re curious, Tencel fibers are created from the pulp of eucalyptus wood, which is then dissolved and spun into fibers. The end result is a super strong yet super soft material, helping to “extend” the life of the material. The hydrophilic quality of Tencel —meaning it wicks moisture away from the body — leads to keeping the body cool while sleeping, working well in a wide variety of climates.

Furthermore, Talalay latex is often seen as the refined and luxurious latex choice, given the aeration process used to produce the material. The end result is a durable yet soft, bouncier latex foam. It also offers up some great pressure relief.

Lastly, the Perfect Contour® Reaction (PCR) Coil System includes 1,000 individually wrapped coils, which King Koil says will prevent motion transfer, keep your body in good alignment, and specifically reduce tense pressure in the low back, shoulders, and hips.

King Koil World Extended Life Collection Vs. Others

How might this mattress compare with others on the market, you ask? Great question! While no two mattresses are the same, here are some comparable bedding options based on construction, feel, and price.

While Layla is an all-foam mattress, it is known for providing ample pressure relief to the shoulders and hips, similar to what the Perfect Contour Reaction Coil system aims to do from King Koil. The Layla also sleeps cool, a feature you should expect with King Koil, given the breathable fibers and moisture-wicking materials that are used.

Layla Mattress

The Layla is an all-foam, flippable bed featuring both a “Soft” and “Firm” side. It’s also built with copper-infused memory foam, which brings some pleasant cooling power to this versatile slumber party.

Sleepopolis Score 4.1/5

CHECK PRICE

Up to $200 off + 2 free pillows + an additional $150 off with coupon code SO150 Black Friday Sale

Material

Foam

Trial Period

120 nights

Shipping Method

Free shipping

Firmness

Soft: 5.5/10

Warranty

Lifetime warranty

Price Range

$$$$$

We recommend this mattress for the following sleeper types:

Hot Sleepers

If you often overheat while you sleep, this mattress should help you stay cool.

Couples

This bed has great motion isolation so you will not feel your partner tossing and turning at night.

Hip Pain

This bed is perfect for anyone suffering from hip pain.

Back Sleeping

Ideal for lightweight, average weight, and heavyweight back sleepers.

Side Sleeping

Ideal for lightweight, average weight, and heavyweight side sleepers.

Stomach Sleeping

Ideal for lightweight and average weight stomach sleepers.

Financing Options

Financing options are available for this mattress.

Visit Layla

Average Customer Rating

4.5/5

Watch Our Video Review