Hyphen Mattress Factory Tour

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Ever heard of the mattress manufacturer, Diamond? Diamond is one of the largest mattress makers in the US and has been in business for over 70 years. We’re about to take you inside their factory where all the magic happens.

Recently, Diamond branched out adding the Hyphen mattress as a sister company. Hyphen is still relatively new, but quickly making a name for themselves. Earlier this summer, Sleepopolis was on location in Los Angeles, California checking out Hyphen’s factory. Watch the short video below to see how the Hyphen comes together!

Hyphen Mattress Manufacturing Process

  1. Hyphen’s foams are delivered in large blocks, which are neatly stacked around their factory in visual kanbans (for you manufacturing aficionados) and used to create each Hyphen mattress.
  2. The process all begins with the cover. A seamstress takes the inside lining of the cover and quickly sews it to the outer piece of fabric.
  3. Large foam blocks are cut into smaller layers, allowing them to be glued and assembled.
  4. Once the foams are cut, they’re organized and individually put through a laminator / rolling glue machine. This lamentation machine puts a thin layer of glue on the foam.
  5. Next the foams go through an infrared oven, which helps remove water from the glue, helping it dry more quickly.
  6. Once the layers have all gone through the oven and are stacked on top of one another, they are placed into a compression machine, which then places pressure onto the foams to ensure all of them are securely glued together.
  7.  After being removed from the compressor, the foams are placed into a fire sock and sealed off. Two team members at Hyphen push the mattress through the fire sock and use a large cutter to seal off the sock.
  8. Next up, the cover of the mattress is sewn / zipped on. In order to do so, the mattress is placed on a spinning table and an employee quickly spins the mattress while stretching the cover for a smooth fit around the foam layers.
  9. Now that we have a full Hyphen mattress made it’s time to compress the foams down. A large hydraulic machine compresses the foams both on top and the sides, before wrapping and rolling in plastic.
  10. Finally, the rolled mattress is placed in a box.
  11. The shipping label is placed on the box and immediately loaded onto the shipping carrier for delivery!

For more on the Hyphen mattress, check out our review series below:

If you’re looking for even more information visit HyphenSleep.com.

Logan Block

Logan is the former content director of Sleepopolis. As content director, he reviewed new mattresses every week and curated the comparisons, best of pages, and video guides on the site. Logan perfected his method by personally testing over 200 different mattresses, so he’s not only able to discern the overall vibe of a specific bed, but to contextualize its feel within the bed-in-a-box market as a whole.

8 thoughts on “Hyphen Mattress Factory Tour”

    • I do recommend using a mattress protector for most mattresses. A few of my favorites are the Purple mattress protector and Malouf 5-sided protector. Both of these do an excellent job of protecting the mattress and could be a great fit for the Hyphen mattress.

  1. I am 6’2″ and 300lbs. My wife is 5’3″ and 130lbs. We will be purchasing a new mattress in the next few days. I like a firmer feel. We both sleep on our sides and stomach. What mattress do you suggest for us. Thanks in advance for your help. We would like to stay under $1000.

    • Hi Rex,

      Just a couple of questions before I make a recommendation:

      Do you have a preference between spring or foam mattresses?

      What size mattress are you looking for?

  2. Hi Sleepopolis,

    Thanks so much for a great resource! Just because I’m in a bit of analysis paralysis, could I please get your opinion?

    I’m 6’2″, 245, and a stomach sleeper currently on a innerspring mattress. I need something else, as that combination is giving me lower back aches.

    That said, I don’t like TOO much of a “memory foam” feel. I had one of the earlier versions and I sunk down way too much and got overheated.

    So, in visiting your site, these seems to jump out at me, as it is indicated they have more of a “responsive” nature to them. Which of them might you suggest, given my inputs (or something totally different)?

    – Hyphen
    – Leesa
    – Ghostbed
    – Tuft and Needle
    – Brooklyn Bedding (this one seems heavy on the latex side, and not sure if I’ve ever tried that)

    Thanks very much!

    • Hey Jeff,

      I’d be happy to help you find a great mattress! Just one more question.

      On a 1-10 scale, where 10 is the most firm, what would you say is your ideal firmness? With that information I should be able to make a more informed recommendation for you.


    • Hi Sleepopolis,

      Cool, thanks. I like a “soft” feeling, but I know that I need support, so nothing overly soft. I think I’m fine with middle of the road, so 6-7 or so I guess.



    • Great, thanks Jeff.

      Based on that information, I would suggest narrowing your list down to the Leesa, Brooklyn Bedding (medium), or Hyphen. These other mattresses are fine choices as well, but I do believe you’d be happiest on the Leesa, BB, or Hyphen.

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