The linen napkins are made from high-quality European linen. Fabric is OEKO-TEX certified. Flax is a natural and environmentally friendly product. Material: Premium 100% linen Size: 45 cm/ 45cm Care: Machine washable (40 C/104 F); Use a neutral or mild detergent that does not contain any bleaching agents such as chlorine or peroxide; Do not manually wring out. Spin drier at a speed not exceeding 600 rpm; Do not wring out linen before drying. Make sure your linen articles are slightly damp before ironing; Remove your linens from the dryer promptly while still damp to reduce wrinkles; The temperature of the iron should not be more than 150 ℃/ 302 F); VANLINNEN supports sustainable consumption and therefore produces only on demand.