ParaTinder Shoe Laces feature 63" of all-purpose Paracord with an added single red tinder thread to ensure you always have fire tinder with you wherever you go. One size fits most boots. We recommend wrapping excess around ankle so it is available to use as needed. Inner white strands of Paracord can be used for fishing line, first aid, sewing thread and more. To ignite, expose center red core thread and light with any UST fire starter.