Washing instructions DRYTEK garments are made of polypropylene microfiber and are dermatologically tested. FIRETEK garments are made of fireproof material which guarantees flame and heat protection and ensures an incredible comfort NATURALTEK garments are multilayered and they are made of two layers: extrafine merino wool outside and performance fibers inside. NATURALTEK COLD SKIN is a natural fabric made without synthetic fibers but with the same performances of synthetic fibers. Label Symbols Guide: Wash at 30°C or below Wash at 40°C or below Wash at 60°C or below Delicate garments. Use synthetic cycle or wash below 40°C Use synthetic cycle, maximum temperature 60°C Dry clean, any solvent except trichloroethylene Dry clean, any solvent except trichloroethylene, respecting temperature and humidity limits Do not bleach Do not dry clean Do not tumble dry Do not iron Iron at low temperature, max 110°C, without steam Iron at medium temperature, maximum of 150 ° C Dry flat in the shade Tumble dry with delicate program