Due to the nature of the non-woven fabric, uneven weaving will occur. Also, the difference in the thickness of the fabric due to uneven weaving may look like oil stains, but it is not a stain. / Do not wash the product. / Please dry the contents before storing. / Do not use if the size does not fit. / It may not fit depending on the size and thickness. / Do not pull it with force or fill with pointed objects. / Keep away from fire and other sources of heat. / Do not use this product for purposes other than its intended purposes.