Mead Trapper Keeper 2-Pocket Folders, Fun in the Sun , Assorted Designs, 6 Pack (73453) Trapper Keeper 2-pocket paper has three pre-punched holes that allow it to easily fit into your three ring binder. 2 vertical pockets securely trap papers & keep them in place. 6 pack of folders includes 3 tropical Fun in the Sun designs. Holds standard letter size sheets. 12 in. x 9.38 in. in size. Fully functional both inside and outside of a Trapper Keeper or other 3 ring binder.