King Koil

Fiberex 4 Inch Coconut Fibre Mattress

King Koil Fiberex 4 Inch Coconut Fibre Mattress

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Overall

#981 in

Mattress

according to Reddit Icon Reddit

Sentiment score33% positive
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Last updated: May 13, 2026

Reddit Reviews

Reddit Iconsnugglesbaby
9 months ago

I love my kingkoil, still so good after 10y. I got the coconut husk one

Reddit Icon1Shamrock
2 months ago

Have a look at King Koil mattresses. They’re pricy but they’re very comfortable. Plenty support in the springs but feels soft to lie on at the same time with the built in mattress topper. My advice when it comes to mattresses is don’t just buy one online. Pick out a few that you’re interested in. Go to a few stores and lie down on them for a little bit.

Reddit Icon3r5ine
5 months ago

Buy Woosa and Origin Mattress if you like cheap white washed OEM mattresses Buy King koil, Tempur, Simmons if you want to buy branded. But if you really want to support local, have a bang of your buck and have an awesome night’s rest, I recommend taking a look at Four Stars. It’s the only mattress that made me dreamed so hard, my ancestors could convey their messages easily

Reddit Iconamuletdrop
2 months ago

King Koil or Respa are really good. I have very bad back pain and my Respa is amazing

Reddit IconArclight09
3 months ago

Depends on your budget TBH. Duroflex if you want something economical. If you can go above 25k, then I would suggest Serta, Therapedic, King Koil.

Reddit IconChipmunk_rampage
4 months ago

Emma, took me a couple months to get used to it but no more back pain! Also have a king Koil on the house and that’s a fabulous mattress too

Reddit Iconcourageous_carrot
5 months ago

Mentioned a few times already but make sure to try them in person, and you'll be pleased (not) to know that the same brand will have the same (or really, really similar) model named differently depending on where they're selling it which makes the whole process so much more complicated. We've never found a mattress model on any of the brands' websites We tried a whole bunch and wanted to like the S brands, but ultimately found a King Koil to be the most comfortable and the best value P.S if you sleep hot, highly recommend checking out the ones that have special linings to make them cooling to sleep on. You may not end up buying them but they were *wild* to experience. There was one we tried in Takashimaya - think it was MaxCoil - that genuinely felt like it had air-con inside and was substantially cooler than everything else on the same floor)

Reddit IconDelicious-Big6154
2 months ago

King Koil has good motion isolation because it is tufted and graphite infused foam and lavender infused foam that keeps you very cool. Plus the tufting makes it last for years without sagging.

Rankings by Use Case

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Best for Ease of movement & sex

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Individuals who toss and turn frequently, or couples who prioritize a mattress that is responsive and bouncy for sexual activity, and dislike the "sinking" feeling of memory foam.
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Best for Heavy & plus-size sleepers

Big Fig - Classic Mattress

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Big Fig - Classic Mattress

Individuals with higher body weights (typically 230 lbs or more) who find that standard mattresses quickly sag, lose support, and cause back or joint pain.
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Best for Hot sleepers

Purple - The Purple Mattress

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Purple - The Purple Mattress

Individuals who consistently wake up feeling hot or sweaty, and find that their mattress absorbs and retains body heat throughout the night.
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Best for Long-term durability

SleepOnLatex - Pure Green Organic Latex Mattress

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SleepOnLatex - Pure Green Organic Latex Mattress

Buyers who view a mattress as a long-term investment and want to purchase one that will maintain its support and comfort for over a decade, prioritizing total cost of ownership over a low initial price.
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Best for Motion isolation for couples

Helix - Midnight Luxe

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Helix - Midnight Luxe

Couples or co-sleepers who are easily woken up by a partner's tossing, turning, or getting in and out of bed.
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Best for Natural & organic materials

SleepOnLatex - Pure Green Organic Latex Mattress

Top pick

SleepOnLatex - Pure Green Organic Latex Mattress

Health-conscious individuals or those with chemical sensitivities who want to avoid synthetic foams, chemical off-gassing, and potentially hazardous materials like fiberglass in their sleep environment.
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