InvisibleShield High Definition for Samsung Galaxy S4-Case Friendly, Screen 100% Clear: Independent light transmission tests show the invisibleSHIELD High Definition is 100% clear, the same as having no SHIELD at all Dry Installation: It offers a unique, mess-free application Lifetime Replacement Warranty: If the High Definition is ever damaged, ZAGG will replace it Military Grade: It was created from a resilient film that was first used to protect U.S. Military helicopter blades Nano-Memory Technology: It features unique properties that allow it to self-heal while maintaining its unrivaled protection