Foldover elastic has a line scored lengthwise down the middle, so it folds over neatly and easily. Typically used in making inner wear - to enclose raw edges such as at the waist and leg opening of undies, or the upper edge of bralette cups. These are thin - less than 1mm thick. Not suitable for applications such as elastic-waisted pants or skirts. To preserve the life of anything with elastic, avoid washing at high temperatures or tumble drying.
Second photo shows an example of the black 15mm elastic used on the legs. (The modal fabric shown is also available.)
