100 count 5" x 7" (Width x Length) Crystal clear bags(flap not included), 1.6 Mil Thickness(single sides). Acid Free & Durability: Made of new polypropylene material, which is safe and skin friendly. The bags won't transfer or lift off ink that provide great protection for your pictures, reliable for long term storage. Comprehensive Protection: thin layer bags fit paper, greeting cards, mat board, art print or photos and backer board, protecting and store your artwork, prints, cards with these clear protective bags. Crystal Clear:These transparent airtight bags are suitable for protecting and storing your artwork, photos, cards and so on, clearly showing the charm of artwork. The re-sealable adhesive strip is on the flap. It can be folded over and sealed over the bag's opening. It can fit the below: 1. Mat frame + backing+ print 2. Mat frame + foam board + print 3. Double Mat frame + backing+ print 4. 8ply Mat picture frame + backing+ print