The holographic bag is actually realized by the second layer of material, there are holographic materials inside these bags, Shiny and glossy with high brightness & high gloss holographic effects to stand out in a competitive retail environment.They have a resealable zipper, a easy tear notch at the top with strong side seams to keep food fresh and lock in the smell of anything with a heavy odor.There is a Clear Special-shaped window, you can customize any shape window you want . They also come in crystal clear front options and completely opaque options.Either option you choose is holographic from every angle.