This is a triple string made by modifying children's tights. The elastic part is wrapped inside the main body, so the elastic isn't visible when the string is tied decoratively. Because it's made of stretchy material, it's not constricting. The string part is white with glitter, so it can be used to look like an obiage (undersash), and you can also enjoy using it in a double layer by layering an obiage over it. I am a professional kimono dresser, and I make these by hand every year to use on site during the yukata season. Elastic part: Approximately 23 cm when laid flat String part: Approximately 50 cm from the end of the elastic