The cellophane sleeves cigars come is is permeable to air and will breath and allow cigars to age, however slower than if they were bare....I'm not so sure about plastic shrinkwrap...the A/F Holiday sampler I bought had shrinkwrap...I took it off, looked at the cigars and closed it up again...I would however leave the humipack in it as I understand that thing is good for several months, and sits in there even though the box is usally in the humidor room at the cigar store...