The Vue All Photo Saver Archival Storage Page 3.5x4.5 is specially designed for securely storing your valuable negatives and photos.This is made of 3 mil polypropylene that offers long-term protection to photosThis Vue-All photo saver has the capacity to hold prints of 3.5 X 4.5"It has a slip-in type of closure, and it comes as 25 per pack