Unlike Vinyl, Guardhouse Shield page are made from Polypropylene, which is a stable, inert material. Thinner, stronger and less susceptible to tearing and stretching. 12 Pocket Guardhouse pages can hold and protect 2 1/2 x 2 1/2 photographs, coins, paper holders, flips... At a fraction of the price! 2.5x2.5 Pockets