Glassine Evidence Envelopes are perfect for collecting, packaging, and preserving small pieces of evidence such as hairs, fibers, paint chips, and fragments found at a crime scene. Glassine envelopes eliminate static electricity and are breathable, transparent, and have a flap to seal evidence. Evidence tape or seals should be used to ensure evidence integrity. Available in two sizes. Provided in packages of 100 glassine envelopes.