This is the strongest and the thinnest Invisible Elastic Thread on Earth! The thread is wound on a spool by a custom made machine so there is no chance of the thread getting lost and tangled. The spool contains a whopping life long supply of 1000 ft... Yes. A single strand of 1000 ft. The length of the thread is more than 2 football fields! It has the greatest stretch-ability of all threads and is absolutely invisible in most light conditions, which makes it the most appropriate thread for making those magical invisible bands.