This is the 2nd invisible shield I have bought and I have to question my sanity. After being highly disappointed with the 1st purchase, I thought that I would "have another go". Despite being an aeronautical engineer who has applied this type of tape to the leading edge of helicopter rotor blades (read the packaging which emphasises this point), yet again the product looks like the surface of the moon. I utilised the application lotion and the little squeegee tool to within an inch of its life, yet my Experia Z looks like it's got mumps!! Save your money.