Where Nest Bedding Mattresses Are Made: Our Southern California Partnership With Diamond Mattress
When we launched Nest Bedding in 2011, we did not start as a polished national mattress brand with a big ad budget, a slick website, or a complicated story about disrupting sleep.
We started as a small business in our first store in Berkeley/Albany, California, selling bed-in-a-box mattresses directly to customers. No gimmicks. No mystery. Just people walking into a local store, asking honest questions, lying down on mattresses, and telling us what felt good, what did not, and what they wished the mattress industry would do better.
That beginning shaped how we still think about mattresses.
From the start, we cared more about quality, comfort, and real customer feedback than over-engineering a product just so it would sound impressive in marketing copy. A mattress does not become better because it has a longer list of buzzwords. It becomes better when the materials make sense, the construction supports the sleeper, the comfort options are honest, and the company is willing to keep improving the product after launch.
In the early years, we worked with several mattress manufacturers as we learned what kind of production partner could actually support that standard. Some could make a decent mattress. Some could move quickly. Some could build to spec. But we were looking for more than a factory that could take an order.
We needed a manufacturing partner who understood product development, material consistency, comfort refinement, and long-term accountability.
In 2017, we began working with Shaun Pennington and Diamond Mattress in Southern California. That relationship became an important turning point in how our mattresses were built, refined, and improved over time.
Why Southern California manufacturing matters
Nest Bedding has always cared about transparency. Customers should know what they are sleeping on, how it is made, and why certain construction choices were made.
Working with a Southern California manufacturing partner gives us a closer relationship with the product than a distant, anonymous production model would. Diamond Mattress lists its California headquarters, mattress manufacturing, product design and development, and showroom in Rancho Dominguez, California. The company also says it has designed, developed, and manufactured at its expanded original Los Angeles-area location for more than four decades, while adding a Texas factory to better serve customers in other regions.
That Southern California base matters to us because it supports a more hands-on product relationship. When we evaluate a comfort update, refine a cover, change a material, or improve a construction detail, we are working with a manufacturing partner that understands our standards and the history of our products.
Who is Diamond Mattress?
Diamond Mattress is not a new manufacturer built around a short-term mattress trend. The company describes itself as a fourth-generation family-owned and operated business with 80 years in sleep products.
Industry reporting adds more detail. BedTimes Magazine reports that Jim and Pearl Pennington moved from Oklahoma to Southern California in 1938 and began making foundations for local mattress manufacturers in a garage. The Pennington family bought Diamond Mattress Co. in 1946. Their son Richard Pennington later joined the business, followed by Randy Pennington, and then the next generation of family leadership.
That kind of manufacturing history matters. Mattress making is physical, repeatable work. A factory has to understand materials, sewing, cutting, foam behavior, coils, compression, packaging, quality control, and the small details that determine how a mattress feels after it leaves the production floor.
Diamond Mattress has also continued to evolve. BedTimes described the company as a vertically integrated bedding producer with experience in pocketed coil innerspring, memory foam, and hybrid mattresses, and noted that Diamond manufactures or finishes many major mattress components on its own equipment, including pocketed coils, foam processing, fabric cutting, and sewing.
For Nest Bedding, that experience is one reason the partnership has made sense.
Why Nest Bedding trusts Diamond Mattress
Nest Bedding began working with Diamond Mattress in 2017. Since then, Diamond Mattress has made mattresses for us through several generations of product development.
That relationship has continued because manufacturing trust is earned over time. It is not enough for a factory to build one version of a product well. The right manufacturing partner has to keep improving with the brand.
Over the years, we have continued to raise the bar on:
- comfort-layer design
- mattress support systems
- cover construction
- material sourcing
- foam and latex specifications
- split-firmness and comfort flexibility
- consistency from one production run to the next
- long-term value for the customer
Some of those changes are visible to shoppers. Others are the kind of behind-the-scenes refinements most customers never see, but still feel over time.
A better mattress often comes from small improvements made repeatedly: a more responsive comfort layer, a better quilting decision, a cleaner material specification, a support system that better matches the intended feel, or a construction update that makes the mattress easier to service later.
That is the kind of evolution we have been able to pursue with Diamond Mattress.
A timeline of the partnership and product evolution
2011: Nest Bedding starts as a local bed-in-a-box store
Nest Bedding launched in 2011 from our first store in Berkeley/Albany, California. Before we had the kind of online presence people expect today, we were learning directly from customers in person. Those conversations still shape how we think about comfort, quality, and practical mattress design.
1946: Diamond Mattress enters its modern company era
Diamond Mattress's Pennington family history traces back to the 1940s, with industry reporting identifying 1946 as the year Jim and Pearl Pennington bought Diamond Mattress Co.
More than four decades in the Los Angeles area
Diamond Mattress says it has designed, developed, and manufactured at its expanded original Los Angeles-area location for more than four decades. Its current California location includes headquarters, mattress manufacturing, product design and development, and a showroom by appointment.
2017: Nest Bedding begins working with Diamond Mattress
After working with several other manufacturers in our early years, Nest Bedding began its manufacturing relationship with Shaun Pennington and Diamond Mattress in 2017. For us, the decision was about experience, responsiveness, and the ability to support better product development over time.
2017-2020: Building a stronger foundation
The early years of the partnership focused on translating Nest Bedding's comfort goals into repeatable mattress construction. Customer feedback, showroom conversations, and product performance helped inform refinements to feel, support, and overall build quality.
2021-2023: Designing for adaptability and longer ownership
As Nest Bedding continued to develop mattresses around long-term comfort, we placed more emphasis on designs that could better serve customers over time. That included comfort-layer thinking, split-firmness options where appropriate, and product designs that support a more flexible ownership experience.
Nest Bedding's Lifetime Renewal Exchange, available on qualifying models, reflects that philosophy by allowing eligible customers to exchange a comfort layer rather than replacing the entire mattress.
2024-today: Raising standards for materials, construction, and transparency
Today, the relationship continues to focus on quality, construction, and material sourcing. Nest Bedding mattresses are designed for different comfort preferences, sleep styles, and material priorities, with USA assembly and domestic and imported materials depending on the product.
If you are comparing current models, our Nest Bedding mattress collection is the best place to see how those design priorities show up across hybrid, latex, flippable, contour, and kids mattresses.
The work is ongoing. Mattress design does not stop at launch. The more we learn from customers, product testing, comfort exchanges, and long-term ownership, the more we can refine what comes next.
What this means for customers
When you buy a Nest Bedding mattress, you are not buying a product from an unknown factory with no connection to the brand.
You are buying from a company that started with direct customer conversations in a local California store, worked through the early lessons of bed-in-a-box mattress retail, and has now spent years working with Diamond Mattress through multiple product iterations.
That does not mean every mattress is right for every sleeper. No honest mattress company should say that. People need different firmness levels, materials, pressure relief, support, motion isolation, and temperature feel.
But it does mean the product is backed by a manufacturing relationship with history, accountability, and shared standards.
That matters because confidence in a mattress should come from more than a trial period or a warranty. It should come from knowing that the people behind the product understand how it is made, why it is built that way, and how each generation has improved.
Why we share who makes our mattresses
Many mattress brands keep manufacturing vague. We understand why. Supply chains can be complicated, models change, and not every production relationship says something meaningful about the product.
For us, this one does.
Our relationship with Diamond Mattress is part of the story because it helps explain how Nest Bedding mattresses have evolved since 2017. The improvements we have made over the years did not happen in a vacuum. They came from customer feedback, showroom conversations, comfort exchanges, product testing, material decisions, and repeated work with a manufacturer willing to keep refining the build.
Diamond Mattress brings decades of mattress-making experience. Nest Bedding brings direct customer feedback, product standards, material priorities, and a commitment to long-term comfort. The partnership works because both sides understand that a mattress is not just a shipment. It is something a customer will live with every night.
That is why we believe the manufacturing story belongs out in the open.
Since 2017, Diamond Mattress has helped us keep improving our mattresses across several iterations. That history gives us confidence in the products we sell and the standards behind them.
A mattress is personal. The people who make it matter.
Frequently asked questions
Are Nest Bedding mattresses made in the USA?
Nest Bedding mattresses are designed and assembled in the USA using domestic and imported materials, depending on the product. Most Nest Bedding mattresses are made primarily in Southern California by Diamond Mattress.
Where is Diamond Mattress located?
Diamond Mattress lists its California headquarters and mattress manufacturing operation in Rancho Dominguez, California. The company also lists a Texas manufacturing location in Fort Worth.
How long has Diamond Mattress been in business?
Diamond Mattress describes itself as a fourth-generation family-owned and operated company with 80 years in sleep products. Industry reporting traces the Pennington family's Diamond Mattress ownership history to 1946.
How long has Diamond Mattress made mattresses for Nest Bedding?
Diamond Mattress has made mattresses for Nest Bedding since 2017.
Why does Nest Bedding share where its mattresses are made?
Because customers deserve a clear answer. We have spent years working with Diamond Mattress to improve our designs, materials, and construction, and we think that manufacturing relationship helps explain the quality behind the finished product.