This Guardhouse Shield page is made out of Polypropylene and are 100% archival. This 9 pocket page is made to fit any standard size 3 ring binder and is perfect to hold and protect 2 1/2 x 3 1/2 sports cards, baseball cards, and gaming cards. All 100 pages are packaged in a beautiful display box. Guardhouse Shield pages are thinner, stronger and less susceptible to tearing and stretching... At a fraction of the price!