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Siopor, what’s it all about?


“Good things come to those who sweat”, a turn of phrase that may seem a bit of a cliché, but that contains a grain of truth. Nevertheless for people in a nicely heated fitness studio with the prospect of a refreshing shower it may be fashionable to have sweat dripping down your body, but if you’re working for hours in wind and driving rain it’s much less pleasant to be drowning in sweat. That’s why Sioen developed Siopor®, a technical fabric that protects you from all weather conditions — wind, cold & rain — without sealing heat and moisture in.

breathable protection layer that expulses excessive heat and perspiration keeping your hard working body cool and comfortable. The Siopor® range comprises a careful selection of different outer fabrics with a specially adapted coating. Discover all of our Siopor® qualities in the paragraph of the same name.

How does SIOPOR work


Siopor® consists of a water repellent polyester outer layer with a hydrophilic polyurethane coating on the inside. The breathability of the fabric is assured by the specific structure of the coating. The microporous basecoat has millions of microscopic “canals”. These pores are a thousand times smaller than waterdrops, but considerably larger than moisture vapour molecules allowing them to evaporate.

An additional hydrophilic PU coating transports the moisture vapour molecules to the outside of the garment in a molecular chemical way under the influence of an energy difference (temperature, moisture) between the inside and the outside of the garment. The fabric “breathes”, perspiration can escape.

The outer polyester fabric receives a durable water and dirt/oil repellent finish, so it doesn’t get soaked and stays clean longer. The seams of all Siopor® garments are taped with the most advanced technology.

This technology guarantees the following characteristics:

  • Wind- and waterproof
  • Breathable
  • Comfortable
  • Supple
  • Lightweight
  • Strong
  • Machine washable

The SIOPOR® Experience

Throw on your Siopor® garment and get an early start at work. On a cold and fickle morning you’ll be glad to wrap up warm in the comfy material. And although it offers you warmth and protection, the Siopor® jacket is remarkably light and supple, following your every move. When the rains starts pouring down, you know you needn’t worry. Your Siopor® protection layer will keep you perfectly dry. The durable water repellent finish makes sure the fabric doesn’t absorb the raindrops, so you don’t have to carry the extra weight of the water.

Albeit the cold outside, the work effort heats up your body and perspiration is produced. But before it can start prickling on your skin, your breathing Siopor® layer moves the perspiration away to the outside of the garment where it can evaporate. You can work all day long without having that clammy feeling creeping up on you.

SIOPOR® Regular is our basic SIOPOR® quality. It sports all the general characteristics of our SIOPOR® range on top of being very light. SIOPOR® Regular is a plain weave polyester with a breathable (100%) PU coating.Weight: ±155 g/m²
SIOPOR® Ultra is our all-purpose SIOPOR® quality. It offers an increased tensile and tear strength on top of a better abrasion resistance. SIOPOR® Ultra is a 100% polyester fabric with breathable 100% PU coating.Weight: ±195 g/m²
SIOPOR® Comfort was specifically developed for our Dynamic range. The ripstop reinforcement technique makes the fabric very resistant to tearing and ripping as well as giving it a specific, recognizable look. SIOPOR™ Comfort is a polyamide fabric with “Taslan Dobby” weave and with a breathable (100%) PU coating.Weight: ±170 g/m²
Siopor® Strong was specifically developed for performing work in very harsh environments. Thanks to a heavy canvas construction the fabric is very resistant to tearing and ripping as well as offering it a very good resistance against abrasion. Because of these features this fabric is applicable for heavy duty applications. Nevertheless the fabric remains supple and is comfortable to wear. Thanks to the use of a membrane the breathability is also very high. Siopor® Strong is a 100% polyester canvas fabric with a breathable (100%) PU laminate.Weight: ±295 g/m²
SIOPOR® Extra is our top range SIOPOR® quality specifically used in our SEPP range. Thanks to the use of a membrane, it performs very well in terms of breathability. The fabric is also very supple and has a cotton feel, which makes it into an exceptionally agreeable outer fabric. SIOPOR® Extra is a 100% polyester spun fabric with breathable (100%) PU laminate.Weight: ±205 g/m²
SIOPOR® FR AST is our flame-retardant SIOPOR® quality. When in contact with flames; it will not propagate the production of flames, thus not causing any further harm to the wearer because of the garment itself. It also has permanent anti-static properties. The conductive yarn which avoids the building-up of static charges (that could ignite an explosive atmosphere) is integrated in the outer fabric and is visible as a grid. SIOPOR® FR AST is a plain weave 100% FR polyester fabric with breathable 100% FR PU coating with permanent anti-static grid.Weight: ±250 g/m²
SIOPOR™ Excell is our newest flagship protective material. The three-layered fabric offers an excellent protection against heat, flames and welding sparks. It is our only SIOPOR® quality that meets the requirements of the new EN ISO 11612 and EN 11611 standards even without the addition of an extra lining. For a fabric that guarantees such a high level of protection, SIOPOR® Excell is remarkably lightweight which improves wearing comfort considerably. SIOPOR® Excell is a dobby ripstop polyester fabric with anti-static grid + breathable FR PU coating + inherent FR knitting.Weight: ±270 g/m²
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