Macron products are made to the highest standards & are subject to strict quality control procedures. Garments however can discolour due to substances such as mud & grass, liniment or oil, and of course perspiration, all of which may not be fully removable by washing. The extent of discolouration can be greatly reduced bt following a few simple procedures.
Soaking and/or washing of the garment in water and detergent as soon as possible after use can reduce discolouration, using at least the same volume of water as the garment being treated. Always follow detergent manufacturers instructions, especially those intended to tackle heavy stains & avoid products containing bleach.