FLEX-2-35
Two layers of high-resilience foam make the FLEX-2-35 the bounciest, most supportive construction we make. It’s finished with a medium-soft version of one of the highest-density foam cores available, which makes the FLEX-2-35 one of the best possible mattress for people who love firmness and support.
Mattress purchase includes free delivery and our 30/90 Commitment.
Sleep hot? Learn how KülKōte keeps you cool.
Meet the FLEX-2-35.
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The bounciest, most supportive foam we carry is used twice in this construction to create a firm feeling, highly supportive, and extremely bouncy mattress. You will not sink into this construction.
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The bounciest, most supportive foam we carry is used twice in this construction to create a firm feeling, highly supportive, and extremely bouncy mattress. You will not sink into this construction.
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An additional 2" of Ventilated Rebound Foam adds the perfect balance of pressure relief and airflow, ensuring long-lasting, cooling comfort.
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With a foam that’s 75% more dense than a typical foam mattress core, our 2.8 density foam core is built to last. The 35 IFD (which is the measurement of firmness) provides a medium-soft feel.
Twin = 39"x75"
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Twin XL = 39"x80"
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Full = 53"x75"
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Queen = 60"x80"
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King = 76"x80"
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Cal King = 72"x84"
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Twin = 39"x75" | Twin XL = 39"x80" | Full = 53"x75" | Queen = 60"x80" | King = 76"x80" | Cal King = 72"x84" |
Beyond Basic Warranties
The 30/90 Comfort Commitment
We won’t rest well until you do. Instead of just refunding your money if you’re unhappy, we’ll use 120 days to rebuild a custom mattress that works for you. And if we can’t, then we’ll refund you.
The Forever Partnership
Sometimes, warranties don’t cover what you need. From the date of purchase, we provide a partnership that ensures you’re satisfied. Forever.
Density Means Durability.
Ever seen a foam mattress with a big, body-shaped indent in it? That’s almost all because of the use of low-density foams. But it’s not just the top layers of the mattress that need high-density foam.
Oftentimes, mattress manufacturers will use quality, high-density foam in the top layer or two of a mattress (the parts you feel), then opt to use low-density, cheap foam in the base layer of the bed in order to cut costs. As a result, a cheap, low-density base is almost always to blame for body impressions, not the top layers. The foam simply isn’t made to last and will collapse with very little use.
1.5-1.8 lbs/ft³
(Most Foam Mattress Cores)
Nearly all bed-in-box mattresses found online use foam with a core density in this range, and most of those are closer to the low end of the range. They may feel the same as higher-density foams because density does not equal firmness. They won’t always feel the same, though.
Over time, these foams will lose 35% of their firmness and 5% of their height.
In other words, they create body impressions and get softer faster than higher-density foams. But they’re far less expensive, which makes them very attractive to other mattress retailers, who hardly ever even tell you the density of the foam they use.
2.8 lbs/ft³
(Comfort Option Foam Core)
Comfort Option uses foam with a 2.8 density, a level quality that is unmatched by our competition. This foam is nearly twice as dense, and in our internal tests, performs nearly 5x better than 1.5 density foams in terms of height loss.
Over time, our foam only loses less than 20% of its firmness and less than 3% of its height.
We’re transparent with the foam we use and call our products “Honestly Crafted” for that reason. We use the most quality foams in the industry and therefore are excited to offer as much information about our specifications as we can.
What is KülKōte?
An advanced phase change material that regulates your temperature as you sleep. Available on all Comfort Option® mattresses.
KülKōte is a Phase Change Material.
KülKōte is a water-based, polymer coating that uses micro-capsules that continually changes phases from liquid to solid in order to effectively manage heat energy. We spray it right onto the surface of the foam on the top layer of our mattresses, along with the surface of our SoftFlo® pillows.
“I had never been to a place where you could construct your own mattress. I couldn’t believe how affordable it was. It’s well worth your time and a hidden gem!”
