What is "sympatex"

SympaTex is a type of fabric that is branded as waterproof with "breatheable" fabrics made or licensed by SympaTex Technologies GmbH. The fabric features a waterproof, windproof and breatheable membrane that is laminated to fabrics either on its inner surface or sandwiched between two fabric layers (often marketed as "3 layer laminate"). The latter system offers greater durability, by better protecting the integrity of the SympaTex layer from abrasion to both the outside and the inside of the garment.