Mylar Envelopes

  • Materials that have a pH of 7.0 or higher.
  • Need a different size or material? This item is customizable. Please inquire.
  • This product has been made in our facility in Brooklyn, NY! We are proud to have been certified as a Brooklyn-Made Company by the Brooklyn Chamber of Commerce.
SKU: Mylar-Envelope


$1.00 to $8.75



Crystal clear Mylar Envelopes heat sealed on three sides to form the highest quality crystal clear envelope for archival storage and presentation.

Constructed of uncoated 4 mil polyester with three heat welded sides.  The heavyweight 4 mil film provides a stiffer product so that the envelope has a greater rigidity and lies flatter thus providing a less distorted view of the enclosed item. 

Sizes to refer to capacity of envelope, they are approximately 3/8" longer in each dimension and open on the short side. Photograph above is shown with a 2 ply mat board added for presentation.

Special sizes and alternate openings are available, please inquire for prices.