woke up to find a huge cardboard box outside my room, wondering what it could be, i ripped the box apart to find the anti static wrist strap, which was a bit odd seeing as they needed a arms length box to fit it in, either way, i got it the next day, even ordering at round about 5ish.
I had never sued one of these before, but its really really easy, works like a charm and fits all wrist sizes, and it can stretch pretty far, and it doesn't get in the way.
worth getting if your doing a lot of pc building or other electrical work that doesn't have another method of grounding yourself.