Print File Crystal Clear Art Protectors 17-7/16x22-1/4" Package of 100, Resealable Adhesive Strip (BOPP1722) Crystal clear bags are an ideal way to present, protect and store all types of images 3.6 mil (BOPP) biaxially oriented polypropylene is completely archival and safe for long-term storage Reusable adhesive strip designed to withstand repeated opening and closing Adhesive strip is placed on the body (not flap) of the bag to aid in safely inserting and removing art work Sealed on 3 sides and opening on short side with 2" flap