What We Offer

A series of intuitive and ergonomically efficient Face Covers


Introducing a whole new level of personal defence and design. Copper+ is able to achieve the same standard of US medical mask ASTM F2100-19 Level 2, ...

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With our engineered 4-layered construction, the classic V9 comes in an antibacterial woven fabric, adding a touch of style, while still maintaining high filtration efficiency.

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Stylish and energetic, and comes in a streamlined 3-layered construction, V11 has an intuitive and ergonomically efficient design, providing a comfort snug fit to a wide range of builds and faces, while still maintaining the highest filtration performance for a fabric face cover.

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A formidable line of collective & personal defence, ready for the "New Normal"

The Covid-19 pandemic has changed the world and our daily lives, as we knew it. In the world of post-lockdown, when we are easing into the "New Normal", we need to co-live with coronavirus by safeguarding ourselves as well as others from human interaction, it’s particularly important that we are well geared up to protect ourselves and others around us, may it be our family, friends, co-workers, even strangers.

SOTERTEX - an innovation and creation of Crystal International Group

Since the beginning of the covid-19 pandemic, while there was a shortage of disposable surgical masks worldwide, with experts in Textile Technology, Apparel Engineering, and Design, Crystal has successfully developed and created a line of reusable fabric face covers, with proven testing credentials of excellent filtration efficiency and anti-bacterial properties, on a par with disposal masks of surgical grade. It has also integrated an ergonomic and dynamic fit, ensuring good breathability with a "never collapse on you" engineered structure, and cooling material for the inner layer to enhance comfort.