Two sizes of translucent glassine envelopes: a tiny little size (2-7/8 x 1-3/4", tiny for a miniature envelope with a flap, but even smaller sizes of glassine envelopes are linked below; shown on the back of a collaged Slide Mailer by Design Team Member Teri Calia) and a larger size, large enough for a 4 x 6" postcard (6-1/4 x 4-1/8"). Both have horizontal flaps like traditional mailing envelopes.
Glassine is archival and is normally used for preserving photographic negatives. These have no adhesive.
Sets of 10 tiny or 5 large envelopes.