WEATHERPROOF PAPER (8 Mil 50 sheets 8½" x 11") " Waterproof Synthetic Paper iGage Mapping Corporation's latest offering brings waterproof paper to a new level of affordability and ease of use. iGage's Weatherproof Paper is excellent for extreme outdoor, marine and field use. It is puncture and tear resistant. Both sides are inkjet and laser printable. It can be folded, glued, embossed and laminated. Easily annotated with ink, felt tip or highlighter pens.