All products manufactured by BLACKFOLIUM benefits from "Lifetime Guarantee" which provides the repair or replacement of the product for structural failure due to incorrect assembly or manufacturing. The "Lifetime Guarantee" does not cover damage caused by improper use, negligence, normal wear and tearing or break of materials over time. Here are a few examples in which our "Lifetime Guarantee" will not answer: Bullet holes; damage from explosion; knife or all kinds of cuts; abrasions; flames or heat sources; any other destructive form. Any modification or intervention on the product performed by the client shall cancel the guarantee.