[BJC]

There are many restrictions on how the ball sits in the pocket. However, There are not any restrictions that I aware of on what the actual mesh is made out of. Even so, I wouldn't imagine that I would be allowed to play a game with a woven metal pocket or something like that. Remember that the stick is also used defensively so I will be whacking people with it very hard which brings up a safety factor. I can see making it out of fishing line or something, but there are many other factors to consider. For example fishing line would provide much less friction on the ball so it would be able to fall out much more easily. Alternatively, something that is too grippy would not allow the ball to come out consistently when throwing. The companies that make lacrosse sticks developed that specific string over a long period of time. Because it is proven to work so well, I decided it was probably the best stuff for the job.