Protective sleeve toploaders are essential items when collecting and saving postcards, or photos. Sold in packs of 25, these Guardhouse postcard toploaders are 12 mil thick and measure 6 3/8 x 3 7/8 inches. Guardhouse toploaders are made of non-plasticized rigid vinyl and are designed to keep photos and cards unharmed during long-term storage, at the same time as offering the collector great visibility of their collectible items.