This 310 gsm paper features a high opacity with a sturdy, ultra-smooth surface that allows for working with dry and fluid drawing media. Suitable for pencil, Indian ink, pen, fineliner, airbrush and acrylic marker. It is smooth on both sides, acid and lignin free, age resistant and erasure resistant. BRISTOL sheets are ideal as mounting boards, enclosures, post cards, stencils, price tags and for sketch and drawing techniques. Ideal for grooving and creasing, and features exceptional cutting and printing properties.