This braided elastic is lightweight elastic that narrows when stretched. Made of 55-percent polyester and 45-percent rubber. Useful for necklines and sleeves. It is machine washable and dryable in temperatures up to 200 degrees fahrenheit. Safe with chlorine bleach and salt water. Insert into casings or stitch directly to wrong side of fabric. Available in black color. Measures 1/8-Inch in size.