Innovation, comfort, and hygiene? Meet the Osaka Air mattress!

Reasonable people know that choosing the right mattress is an investment in health, daily comfort, and quality of life. In a world overloaded with ads and marketing slogans, it’s getting harder to find a product that truly delivers on its promises. Meanwhile, the Polish brand ONSEN® refuses to compromise. Our flagship model – the shamelessly perfect Osaka Air mattress – proves that the right mix of reliable knowledge, innovation, and honest customer care leads to truly outstanding results.

Our specialists designed the Osaka Air foam mattress for those who don’t want something generic but expect a functional solution tailored to real needs. Thanks to the use of high-resilience and memory foam in a four-layer construction, this model not only ensures healthy sleep but also genuinely supports the spine and promotes recovery.

What makes it stand out? Above all, its lack of unnecessary features that only serve to lure unaware consumers. Here, everything is perfectly thought-out – no need to flip the mattress or choose from multiple firmness levels. Osaka Air comes in one optimal version that gives you everything you need. That’s exactly why the Osaka Air mattress outshines the competition and why thousands of users in Poland and across Europe choose this model. No compromises, no cheap tricks – just genuine respect for rational people.

Osaka Air is not a randomly assembled mattress like most models on the market. Its four-layer structure resembles a perfectly composed cake, where each layer plays a distinct role. The top layer is made of HR30100 foam, which dynamically responds to body pressure, providing immediate comfort to every user. Below that is V50075 memory foam, responsible for contouring the body. Its placement is intentional, as memory foam in the top layer would have too many downsides.

The third layer consists of HR35120 foam with ventilation channels and an Aero 3D mesh, ensuring excellent air circulation throughout the night. The bottom layer, made of HR50160 foam, serves as the solid base of the mattress. It stabilizes the entire structure and guarantees durability even after years of use. All foams naturally feature an open-cell structure, enhancing breathability and lifespan.

The Osaka Air is a one-sided mattress, meaning it doesn’t need to be flipped. The layers are purposefully designed to perform their specific functions. This challenges a common industry myth, as flipping a mattress generally doesn’t extend its life. Therefore, the mattress construction must be optimized from the start to function properly.

Thanks to this thoughtful design, Osaka Air not only maintains a physiologically correct spinal alignment but also minimizes pressure points, improves circulation, and reduces micro-awakenings. It's simply the best mattress that truly works. With this composition, you can be sure that mattress wear and tear won’t be your concern for years.

Nowadays, latex mattresses are often promoted as luxurious and breathable. Latex is marketed as an ideal material, though it actually isn't. That’s why ONSEN® clearly states that HR foam is a safer, more functional, and more hygienic alternative. It's important to know that the structure of latex generally does not allow air to pass through. In this case, ventilating the bedroom does little to help.

Thermal insulation in latex mattresses means that air circulation is practically nonexistent. Latex often triggers allergies and retains moisture, while dense and durable high-resilience foam offers not only high elasticity and breathability, but also hypoallergenic properties.

What’s more, the high-resilience foams used in the Osaka Air mattress are fully synthetic, making them free of harmful substances that could trigger allergies. They don’t collect dust and are more resistant to mold growth, ensuring better hygiene. Their dynamic elasticity allows for better response to body movements, especially when changing sleep positions.

Unlike common latex, which can be heavy and hard to maintain, HR foam is relatively lightweight, making it easier to transport and use daily. Moreover, it doesn’t deform permanently as quickly as many latex foams. This means the Osaka Air mattress has a much longer lifespan.

The use of top-quality high-resilience foam in every layer of the Osaka Air – except for the second layer, which uses viscoelastic foam – is not only a testament to the brand’s reliability, but also a sign of deep understanding of user needs, for those who seek comfort without health risks. For those wanting stable spinal support, proper ventilation, and safety.

One common issue with cheap mattresses—even those sold at high prices—is the lack of support where the body needs it most. The Osaka Air mattress features point elasticity, meaning each section of the mattress responds only where pressure is applied, delivering individualized support to every part of the body. There’s no motion transfer like with traditional spring mattresses.

This ensures that the hips, shoulders, and back are stably supported, and the spine maintains its natural curves—regardless of sleep position. This isn’t marketing talk, but a proven ergonomic effect that delivers real health benefits. These include reduced muscle tension and improved circulation, which help alleviate morning pain.

Point elasticity also means greater comfort for couples. Movements by one person don’t transfer to the other side of the mattress, resulting in fewer disturbances and more restful sleep. This is especially important if you’re looking for a mattress for people with different body weights, as weight plays no role here.

It’s no surprise this is a universal mattress recommended for various social and professional groups. It’s an excellent choice as a children’s mattress, or for seniors or athletes, since point elasticity ensures it performs well regardless of age or body type.

It’s not just dynamics—mattress firmness also affects sleep comfort. For the Osaka Air foam mattress, a 6.5/10 firmness on the US scale was chosen, which corresponds roughly to an H3/H4 mattress in Poland. It is therefore a medium-firm mattress ideal for nearly everyone. We deliberately avoid calling it an H3/H4 mattress, since the Polish scale has no standardization. This means two H3 mattresses can actually feel very different.

It’s not a mattress that's too soft where you sink in like a hammock, nor is it too hard to cause pressure point pain. It strikes the perfect balance, offering comfortable sleep for back and side sleepers alike. It’s also suitable for stomach sleeping, although we don’t recommend that position.

The firmness of the Osaka Air mattress was carefully selected based on testing and research and has received excellent feedback from users. Rather than offering five firmness levels—which makes little sense for the customer—ONSEN® opted for one optimal firmness that supports both functionality and health.

It’s also a way to reduce uncertainty when buying a mattress online. If something works well for almost 100% of people, it’ll likely work for you too. And if not, you’ve got 100 days to return the mattress with no hassle. Plus, there’s a very simple warranty on the mattress core for up to 15 years!

One of the biggest customer frustrations when buying a mattress is the lack of availability in the right size. The Toruń-based brand ONSEN® addresses this by offering the Osaka Air mattress in virtually any size. You'll find the popular 160x200 mattress – the most common in Europe – as well as the large 200x200 mattress and many others. We can also produce custom-made mattresses, including those with unconventional shapes.

This means our mattress fits single, double, children’s, and box spring beds, as well as frames with non-standard dimensions. It's also perfect as a mattress for pallets, and many other settings. Many people also choose it as a camper mattress to sleep comfortably while traveling. Importantly, no matter the size, the mattress retains the exact same layered construction, ensuring consistent quality.

People with non-standard beds are often forced into compromises – mainly buying lower-quality mattresses simply because nothing else fits. ONSEN® solves this problem completely by offering mattresses in any size without any loss in quality. And thanks to the single-sided construction, there’s no risk that one side of the mattress will wear out faster after just a few weeks or months of use.

Many well-known brands, including reputable manufacturers, recommend buying an additional mattress protector for hygiene reasons, even though most people don’t actually need one. ONSEN® boldly states that a mattress protector is an unnecessary expense—unless you truly need it. It’s useful if you wet the bed at night or sleep with a pet, but it’s not necessary for everyone.

Protectors often trap moisture and block the mattress’s breathability, which is something we’d all rather avoid. The Osaka Air mattress relies on airflow and ventilation as a key feature, and any added layer of stiff, air-blocking material just gets in the way.

The Osaka Air also comes with a mattress cover that outperforms most covers on the market. In particular, we recommend the PUROTEX+™ mattress cover, specially designed by experts for allergy sufferers and hygiene-conscious users. It features HeiQ Allergen Tech, which reduces dust mite allergens by 96.6%, cat dander by 83.6%, and dog dander by 76.5%. It’s a perfect solution for people with allergies who want to sleep comfortably.

Thanks to its washability at up to 40°C, keeping the cover clean is easy and effective. Moreover, the cover is two-piece, allowing you to remove and wash just the top layer—the one that actually comes into contact with your body—while the bottom part can stay in place.

One of the common fears when buying a mattress online is the risk of making the wrong choice. ONSEN® addresses this by offering a 100-night trial of the mattress in your own bedroom. This is our standard, risk-free offer with no fine print or hidden fees—not a limited-time promotion. If you feel the mattress doesn’t meet your expectations, you simply return it.

This simple yet bold sales model demonstrates how much we trust both our product and our customers. And rightly so—the return rate of the Osaka Air mattress is nearly zero. What’s more, the Osaka Air comes with a 15-year warranty on the core, a testament to its durability and quality craftsmanship. ONSEN® is not just another mattress manufacturer that disappears after a few months. We are known as a responsible brand that supports its customers for years to come.

This model proves that you don’t need to take our word for it—you can simply try it yourself. Only brands that are truly confident in their quality can offer such long warranties and honest return policies like we do. Even reputable manufacturers from traditional retail don’t offer return and warranty terms this straightforward.

We often encounter phrases like "7 comfort zones" or "mattress with 9 firmness zones" on the market, which make us smile. It sounds scientific, but in practice, it’s a marketing gimmick that, in our opinion, has no real impact on sleep comfort. The human body doesn't stay in one position all night long. Moreover, everyone has a different height, which further complicates things.

Even designing logical zones based on a person’s height doesn’t guarantee they’re placed correctly. Comfort zones assume that your legs, back, and shoulders will always align with specific parts of the mattress. But that’s completely unrealistic—we sleep dynamically and change positions multiple times during the night, which means we need a mattress that responds to shifting pressure.

ONSEN® firmly rejects the idea of zoned comfort in mattresses. Instead of artificially varying firmness along the length of the mattress, we focus on proper body adaptation, which relies on proportional weight distribution. What truly matters for comfort and health is point elasticity, not zoning.

Rather than overpaying for so-called innovations, use the knowledge you’ve gained here and elsewhere. Don’t buy a mattress made for a store, designed for quick and profitable sales. Instead, choose a mattress made for you, backed by someone who takes real responsibility. Osaka Air delivers true functionality—without nonsense or illusions. Real comfort comes from quality materials, not from how many zones are advertised.

Once considered the standard, the pocket spring mattress is now being replaced by modern foam mattresses. Why? Because even if it offers support at first, its springs lose elasticity over time, begin to squeak, and can shift out of place. Moreover, springs are vertically elastic only, but not horizontally or diagonally—whereas HR foam is elastic in all directions.

You can rest assured that the Osaka Air mattress contains no springs. Instead, it uses HR and V foams with controlled density and firmness, providing quiet, elastic, and stable body support with unique responsiveness. There’s no risk of mechanical damage, and no need to flip the mattress, as is often advised with spring mattresses.

It’s also important to note that pocket spring mattresses are significantly heavier—but that doesn’t mean they last longer. Plus, air circulation is often lacking, since pocket and multipocket springs are made of felt and glued to one another and to other layers. In contrast, the Osaka Air mattress ensures ideal airflow thanks to special technical design and the open-cell structure of the foams. In short, springs are 20th-century technology. A quality mattress doesn’t need steel—knowledge, experience, and the right foams are enough. And ONSEN® has them all.

The ONSEN® sales model is built on a D2C strategy (direct-to-consumer), which simply means we operate without intermediaries, showrooms, or distributors, taking full responsibility for our products. As a result, the customer receives a premium mattress at a fair price—without the hundreds-of-percent markups typical in retail stores.

It’s also a guarantee of authenticity that comes from direct contact with the brand. You don’t have to trust random sellers because you’re buying straight from the source. That means you can be sure you’re getting a brand new, flawless, and functional mattress, made with your needs in mind.

Smart choice means more than just price, though the price remains honest. It’s a business philosophy that is simple, transparent, and fair—just like us. ONSEN® is a brand focused on building the best product and customer relationships, not on fake sales or flashy discounts.

With this model, both sides benefit: the customer gets the highest quality product without compromise, and the brand builds trust and a community that comes back for real insight—and for more products. Because once you experience our top-tier quality, you’ll want more of it.

But you should know that ONSEN® is not a mass-market brand selling a Chinese-made product. We are a fully Polish company that targets only sensible consumers, deliberately avoiding the rest. Thanks to our unique philosophy and quality, we’ve earned the trust of customers across Europe.

ONSEN® products are made using the finest materials from European suppliers. The foams we use are CertiPUR-certified and mostly sourced from Polish factories. The only exception is the base foam in the bottom layer of the mattress, which we import from Germany. Our textiles meet the Oeko-Tex standard and are supplied by a respected Belgian manufacturer. Meanwhile, our entire production process takes place in Poland under strict quality control.

Our reputation comes not from aggressive marketing but from customer satisfaction. User reviews speak for themselves—and so does the fact that our return rate is close to zero, even as our community continues to grow. ONSEN® is truly a brand you can trust—and you won’t regret it.

In a world where quality often loses to loud advertising, ONSEN® consistently swims against the current. That’s exactly why we are valued by people who think independently and choose consciously.

There are many myths circulating in the mattress world that can seriously confuse buyers. One of them is about the independent operation of springs in pocket spring mattresses. While each pocket spring is indeed placed in a separate pocket, these pockets are sewn or glued together across the surface. In practice, this means that the movement of one spring affects the others, limiting point elasticity and causing motion transfer. The result is reduced comfort and no motion isolation, which is what the customer expects.

Another myth concerns adjusting the mattress to the user's weight, which is not very common outside Poland. However, human body weight is distributed evenly across the mattress surface, and what should determine the choice of firmness is not the subjective feeling of comfort, but the real need for proper spinal support during sleep. A mattress that is too soft or too firm may seem comfortable at first, but over time it becomes harmful. Initially subtly, and later very painfully, it causes or worsens various ailments. That’s why it’s important to view a mattress not through the lens of habit, but of health. It is therefore worthwhile to change one’s habits for those that yield better results.

Another common and unfounded belief is that a mattress should be bought in a physical store, preferably after a short tryout in a showroom. This is a mistake that can be costly, as store conditions are entirely different from those in your bedroom. You're wearing different clothes, you control your movements, and the test time is very brief. Moreover, some retailers – including reputable ones – deliver mattresses that differ from those displayed. That’s why the best solution is the opportunity to test the mattress at home, as offered by ONSEN®. For as long as 100 nights, in real home conditions, with the option of a true return, not just an exchange for a more expensive model. Only then can you really assess whether the mattress suits you.

ONSEN® isn't just another mattress company, but an organization with a clearly defined social mission. Our goal is to overturn outdated market standards that put profit above customer welfare. We want to change the way people think about sleep, health, and ergonomics, moving away from marketing myths. We're pushing the world toward an honest, functional, and science-backed offering that doesn't force anything on anyone.

ONSEN®'s mission doesn't end with creating a comfortable mattress that has become iconic. It's an educational mission that focuses on raising customer awareness that sleep comfort starts with knowledge. Not at all from high prices, brands, or spring counts, because that doesn't matter. That's why we offer not so much products, but reliable content, substantive support, and consumer education, which is visible on our website and social media. We're here so people can make informed decisions, not under the influence of advertising.

We believe in the power of a community of reasonable people, which we create together with our customers. We don't focus on demographics, because we're not interested in your gender, age, or place of residence. We're interested in having similar values, lifestyle, and level of awareness – a common direction. Our customer is someone who thinks independently and seeks real solutions, not just beautiful slogans. And it's for such people that we create our offering, and then develop it together with them, because the customer is most important to us.

All of this makes ONSEN® not just a company, but actually a social movement that grows month by month. Our mission is the foundation of the brand, not the result of marketers' work. So if you value transparency, knowledge, and real value, then you're part of this mission, and it's for you that the Osaka Air mattress was created, which is our symbol. We're almost always available for you, and we respond substantively and help solve problems. Every ONSEN® customer is a member of a community of reasonable people who know that the best solutions don't have to be the most expensive. They simply have to be honest and intelligently designed, which translates into quality.

Although the Osaka Air mattress is our flagship product, the ONSEN® range is much broader. It was created to provide comprehensive support for users’ health and comfort, both at night and throughout the day. That’s why we have expanded it with orthopaedic pillows, anti-allergy bedding and office furniture, all of which undergo rigorous quality control.

In the orthopaedic pillow category we offer three anatomical models. They are fully cast from HR foams in three-dimensional moulds. For most customers we recommend the Enso pillow, which is universal. It suits almost anyone who needs stable yet springy support while sleeping. A little firmer is the Asana pillow, which we suggest for people of medium height and weight. The largest is the Hiro pillow, designed for those with a muscular build. All pillows retain their shape throughout the night, and their ergonomics have been confirmed by specialists.

Our range is completed by anti-allergy bedding made from top-quality materials that meet Oeko-Tex® standards. It is skin-friendly and resistant to allergens, yet durable and easy to care for. Together with the mattress and pillow it forms a perfectly matched sleep system that enables restorative sleep every night.

For those who value ergonomics during the day, we have created ergonomic office furniture designed for people who spend long hours at a desk, such as gamers or office workers. For them we offer height-adjustable desks and comfortable chairs that promote a healthy posture.

Find out why our customers keep and love the Osaka Air mattress, which has changed their lives for the better. It’s not only about comfort but also about honesty and well-thought-out construction that meets real user needs. If you have any questions about our products or simply need help choosing the best solution for you, get in touch with us. We will be happy to advise you, because our mission is to help sensible people make good decisions.

We also encourage you to explore other articles on the best sleep and health blog, as well as the Encyclopedia of Healthy Sleep prepared by the ONSEN® team of specialists. For those who care about spine health, we recommend a set of spine exercises prepared by our physiotherapist.