Permanent Fabric Marker: This fabric marker is permanent, not washable, and not suitable for temporary marking. The white name labels are clear and easy to read, do not affect the appearance, and do not damage clothes. Function: These name labels can be used in the laundry to prevent clothing mix-ups and can also be attached to school uniforms, sportswear, t-shirts, shirts, etc. for easy identification of items. Versatile Use: Sew-on or iron-on clothing labels can be used to label clothes, shoes, socks, backpacks, scarves, hats, towels, sportswear, etc., and are also ideal for use in schools, camps, nursing homes, etc. Machine Washable: The name labels are machine washable. The name labels on clothes are made of durable polyester fabric and can be washed repeatedly. The handmade fabric is sturdy, durable, and practical; if sewn onto clothes, it can also be washed with the garment. The water temperature should be below 30 degrees Celsius. Easy to Use: The name labels have an adhesive backing and can be firmly ironed onto clothes. Write your name, phone number, or other garment name on the name label and iron with a dry iron on high heat for about 15 seconds. If the garment is not convenient to iron, the label can be sewn on in the usual way.