You get 20 packS of 50 Mylites 2 Mil Mylar Bronze / Silver Age Comic Book Bags (total 50 Mylites) for each quantity of "1" purchased. new factory sealed

E Gerber calls these "Standard Comic Book Size" but we believe "Bronze / Silver age" is a bit more accurate since there isn't a "standard" era of comic books.

Each mylar sleeve holds a standard thickness 7" wide silver or bronze age comic book (mid 1950's to 1970's).

Mylar Dimensions : 7 1/4" x 10-1/2" + 1-1/2" flap
Mylites do not have adhesive on them, and require tape for closure (not included).

Worth noting: There are some silver age comic books, such as Dell and Gold Key brands, that are wider than standard silver age comics and will not work in these mylars.  Please be sure to measure your books to make sure you're getting the right size.  If you're not sure, contact us.  We're happy to help.

About E. Gerber Mylar Products:
E. Gerber Mylite 2 Mil Premium Mylar bags are made of biaxially extruded polyester film and offer safe, secure, and long term archival protection for your best comic books, documents, magazines, art, prints, records, and other collectible items. The protection they offer is far superior to poly bags, which tend to last only 5-10 years before they need to be replaced.

Mylar is an extruded polyester film that is simultaneously stretched in two directions to give it maximum strength. 
It resists penetration by oxygen and other gases approximately 300 times more than polypropylene. 
It is also several hundred times stronger and more stable. It offers protection for 100's of years (essentially forever).