Wash before first use. We recommend using a cold wash for the first wash. After that, wash your muslin or blanket at 40 degrees max. Check your washing load does not contain any sharp items, as clothing with zippers can snag the material. Please note: product may shrink in a tumble dryer, so line-dry where possible. Our bamboo cotton blend gets softer every time you wash it. Iron on reverse on a low setting.