Dirt, dust and stains put membrane jackets and trousers with a functional membrane to the test. Dirt can affect the breathability of a functional jacket, because even if the membrane is completely waterproof, it is primarily the water-repellent finish that prevents the outer fabric from becoming saturated with water. This coating wears down due to dirt and subsequent cleaning – more quickly under heavy use than in normal wear. This is precisely why STRAUSS develops workwear with functional features. Frequent brushing and washing of functional clothing cannot be avoided in a working environment – and is actually essential for maintaining its functionality. Regular cleaning and care extends the lifespan of functional jackets and trousers and can even restore lost functionality. We therefore recommend re-waterproofing functional workwear after every wash to prevent work-related dirt from penetrating the fabric.