These traditional glassine envelopes can be used for tucking that special memento into a card, album, journal. Because they are archival, they can protect those items that might not be acid-free from destroying the rest of your artwork. These have been used by philatelists for years to sort their stamps.
True to the glassine tradition, there is no adhesive on the envelope flap.
The measurements are:
Mini — 2-7/8 by 1-3/4 inch
Small — 3-5/8 by 2-5/16 inches
Medium — 4-1/4 by 2-1/2 inches
Medium+ — 4-7/8 by 3-1/2 inches
Large — 5-1/16 by 3-1/8 inches
Extra Large — 6 by 3-12 inches
These newly produced glassines are shaped a bit differently than they have been in the past. There is no longer a point to the flap.