The invisibleSHIELD is made from a revolutionary material used to protect digital devices from scratches and wear and tear. Due to the shield's toughness and application ease, it is viewed by many to be the best screen protectors on the market. More specifically, according to ShieldZone,

The invisibleSHIELD is the toughest, most durable gadget scratch protection film available on planet Earth. The film has its origins in the U.S. military, where it was used to protect the leading edges of helicopter blades from wear and tear while traveling hundreds of miles per hour. Our proprietary film is a clear, urethane plastic (invisible, invincible) with unique properties that allow it to provide self-healing qualities and unparalleled abrasion resistance.

Though international orders shipped freely won't include tracking information offered on orders shipped within the US, the important part is that there will be no charge. Regardless of the number of protectors ordered, the free shipping policy remains intact.

Of course, free shipping applies to invisibleSHIELD protectors order directly through ShieldZone.