Each set contains 200 pieces, made of high-quality materials. These magazine bags are safe and harmless, without being shabby, toxic, or having any unpleasant smell. Their thickness is 2.75 mil, which is thicker than the common 2 mil found in the market. They can better protect your precious collections from pests, moisture, and dust. Using them makes it easier to organize and store. Its size is 8.78 inches x 10.5 inches. It is suitable for most existing magazines, weekly publications, documents, photos, and other items for collection. It provides perfect compatibility and enables a better appreciation of these treasures.