Gore-Tex® is a thin, porous membrane that is bonded to fabrics like nylon and polyester to make them both waterproof and breathable. And yes, it really does work. How? The pores (9 billion pores per square inch) in the membrane are too small (20,000 times smaller) for water droplets to pass through, so rain and snow stay on the outside. But those same pores are large enough to allow molecules of water vapor (sweat) to pass through--making it "breathable" from the inside.

It is important to note that Gore-Tex®, like all other waterproof/breathable membranes or coatings, has its limits. It is not completely waterproof or completely breathable in all conditions. Gore requires that all garments made with their product have factory seam-taping (to eliminate leaks), which requires special machinery.

ISOLFIL is produced with the lightest fibre known to man.With a specific gravity of 0,91 g/cm3 the polypropylene fiber is even lighter than water.

The polypropylene fibre of ISOLFIL has the lowest thermal conductivity of all the other fibres.

ISOLFIL has the lowest moisture regain coefficient, consequently it has the best keep-dry factor of all fibres. ISOLFIL is 160 times less absorbent than cotton and 8 times less than Polyester which is its nearest rival. Knitwear made in ISOLFIL keeps the body dry; its unique vapour transfer ability (wicking) moves perspiration quickly and naturally away from the body to the outside where moisture will then evaporate. The result of these two actions, wicking and evaporation, is that you stay dry and comfortable under any weather condition and under any activity.

The fibre of ISOLFIL is chemically inert, consequently it prevents any kind of allergic reaction.

In order to achieve its unique balance of waterproof breathability, Sympatex uses both chemistry and physics to its advantage. Since it is a solid, non-porous film, Sympatex is impervious to water. What makes Sympatex unique are the hydrophilic (water-loving) molecular zones that have been built into the membrane.

When perspiration takes place on the inside of a garment, it begins to evaporate. Since the temperature and humidity inside an article of clothing are higher than on the outside, there is a driving force from the inside to the outside. The free-floating moisture vapor molecules from perspiration are driven through the hydrophilic zones in the Sympatex membrane to the outside of the garment where they can evaporate, leaving the inside dry and comfortable.

Tactel® is DuPont’s registered trademark for its brand of tactile and aesthetic fibers made of nylon. Clothes made with TACTEL have an inviting touch. They are clothes that are comfortable to wear.

Tactel® supports a premium for everyone. Tactel® provides the practical benefit qualities of softness, lightness, strength, ease of care, and versatility demanded by consumers today.

When DuPont scientists created Thermolite® Base, nature was their role model. They discovered that polar bears have fur with "hollow" hairs for greater insulation. From this simple discovery, Thermolite® Base hollow-core fibers were born.

Today, these hollow-core fibers from DuPont are used to create a variety of warmth products whether it's insulation for sleeping bags, coats or boots or high tech base layer clothing, you'll find a Thermolite® product that meets your needs.