This hands free measuring device is the perfect companion when working in challenging environments. Just tie one end of the dispolsable/compostable thread to a tree/anchor, set the counter to zero and start walking. As you go the Hip-Chain 2.0 will keep track of distance for you. When you're done just cut the thread and move on. With a 5000m thread capacity, and a new mounting system this is the ligtest version yet. Comes with one spool of thread.