I've been running with these since early May this year. Not a single hole on them.

They are standard bicycle inner tube which you can buy everywhere about 2€. And you don't have use a new inner tube..

Just cut them to right lenght, pull over the shock and put a zip tie on both ends and your good to go.

They're of course little difficult to put on and get off when needed, but for me the price and durability do the trick. Material is so cheap, that I usually don't try to get them off the shocks in one piece. I just cut them open like a fish.

How they look is of course another thing.. For me they're ok. I don't do bling bling anyway and my baja is battle scarred all over, so these blend in just nicely..