Composition: 100% cotton, g.s.m. 150 g/m² Made of high quality yarn Instructions for washing and drying: Remember! HAND WASH, turn INSIDE OUT, preferably using liquid or powder laundry detergent FOR COLOURS because products for white clothes always contain bleach! Myself, I wash by hand in lukewarm water, but that's just me. If you want to, you can use a washing machine, but don't use a mechanical dryer and – no bleach.