The invisible Shield come with a lifetime warranty, and if you have to remove it for any reason, or it comes off (like that actually happens ) just send it back and they will send you a new one.
I have the full body shield and it rocks.
Nevermind... i just got my invisi shield in the mail so I'll find out soon enough. It looks almost identical in cut to the bodyguardz. Bodyguardz sends you 2 while invisi shield gives you as many as you want as long as you send them in the new one (according to an earlier post). So sounds like it's a user call as to which you prefer.