Recommended 30C wash Avoid tumble drying to prolong the life of your fabrics, air drying is recommended but if you choose to tumble dry, do so on a low/gentle heat. Please pre wash ALL fabrics before use, except waterproof fabrics, these we recommend wiping clean or washing on a COOL wash. Reasons for prewashing include: To avoid shrinkage (common in natural fibre fabrics such as cotton),for hygiene reasons; to remove any dust etc from fabrics and Incase of colour run.