Effectiveness of anti-dust mite covers: why pore size is more important than threads count

When choosing bed linen or a mattress cover, we often hear about the threads count per square centimeter . This figure is even sometimes considered a guarantee of quality . But in the case of anti-mites , which are medical devices , it's not the threads that matters most—it's the size of the fabric's pores .

A thinner wire = more threads , but not necessarily more protection

It's true that a fabric made of threads can have an impressive threads per square centimeter. But that doesn't mean it filters better. Why? Because a large number of threads can be achieved… with very fine threads . And threads can leave larger pores between them. It's these pores , these tiny openings between the threads , that determine dust mite allergens

What really matters is the size of the pores , which are the "holes" through which allergens can pass.

Let's take two examples:

• Texaal® Cotton contains 271 threads /cm² ,
• Texaal® Polyester exceeds 1000 threads /cm² .

And yet… their anti-mites is identical. Why?
Because it is not the number of threads that determines performance, but the fabric pores threads .

Thanks to the Texaal® weaving technique , all our covers have a pore size of less than 5 microns , which is much smaller than the allergenic particles of dust mites, which are generally larger than 10 microns .
To achieve this performance, we adjust the threads according to their thickness : the yarn used in Texaal® Cotton is thicker than that of Texaal® Polyester , which explains why fewer threads are needed to provide equally effective protection.

The result: allergens cannot penetrate Texaal® , regardless of the material used or the threads per cm².
And this effectiveness is maintained even after 100 wash and dry cycles , as confirmed by tests carried out in an independent laboratory.

A medical device designed within a strict quality framework

Our anti-mites are manufactured under a quality system certified to ISO 13485:2016 , the international standard specific to medical devices. This guarantees:

• Product safety​
• Its performance /efficiency
• Its medical utility in the management of dust mite allergy.

Clinical results to support this

Beyond technical tests, validated and published clinical studies have demonstrated a reduction of more than 62%* in symptoms experienced by allergy sufferers using our anti-mites . This result testifies to their real-world effectiveness .

*_{Impact of using anti-dust mite covers manufactured according to an ISO 13485 certified process on the quality of life of allergy patients – A follow-up study of 52 patients – C. Martin, A. Vanlaeys, L. Salles & T. Porée (2019) – World Allergy Congress 2019}

In summary: don't rely solely on the number of threads /cm²

threads count can give an idea of ​​the weave, but it's not enough to judge the quality and effectiveness of a anti-mites . What matters is the pore size, which determines the fabric's ability to filter allergens .