25 MTR WIDTH 4MM, Suitable for 75-80 Surgical Mask Making, White Elastic Cord ,Make your own mask, stimulating interest in artistic activity and creativity, imagination. Widely used for children's handicrafts. The best gift is to make a mask for your family. Can be used as rubber for handmade masks. Recommended for those who are having a shortage of masks! Ideal for sewing, handicrafts and handmade. High quality mask rubber that is flat and hard to hurt your ears. Can be used as rubber for handmade masks. Recommended for those who are having a shortage of masks! Ideal for sewing, handicrafts and handmade.