If you are a sofa When you buy a sofa, you might come across specifications like "High-Resilience Polyurethane Foam 30 kg/m³" or "40 kg/m³ with padding." At first glance, this sounds rather technical—but these details tell you exactly how high-quality and durable your sofa really is.
What is high-resilience foam?
HR foam (High Resilience) is a high-quality cushioning foam that is more elastic and durable than standard foam. It adapts better to your body, retains its shape longer, and ensures that your sofa does not appear “sagging” after a short time.
The density information – 30, 35 or 40 kg/m³?
The number indicates how much material is contained in each cubic meter of foam—the density. This has less to do with the degree of hardness and more to do with durability and dimensional stability.
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30 kg/m³ → solid standard, suitable for normal use.
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35 kg/m³ → significantly more durable, offers better comfort.
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40 kg/m³ → Premium quality, very stable, stays in shape even after many years.
In short: The higher the density, the longer you will enjoy the sofa have.
Padding for extra comfort
If the cushion also says "wadding 300 g/m²," it means that the foam is covered with a layer of wadding. This makes the seat softer and more comfortable, while also ensuring the cover has a beautifully even finish.
Does density say anything about hardness?
No. The hardness (whether you sit softly or firmly) is determined by another value – the so-called compression hardness. Two Sofas So, with 35 kg/m³, different materials can feel different. The density tells you something about quality and durability.
Conclusion
If you are a sofa If you're looking for a mattress that you'll be comfortable sitting on for many years, be sure to pay attention to the foam density. 35 or 40 kg/m³ is ideal for long-term enjoyment. And if you like things soft and inviting, a model with additional padding is just right for you.
