This extra smooth Bristol Board is 250gsm in weight and has an extra smooth surface and bright white colour making it ideal for fine detail drawings and illustrations with pencil, technical pen, pen and ink and airbrush. 100% acid free and 100% woodfree to ensure long term stability, this Bristol Board has a strong surface for repeated working and erasing and is also suitable for light washes without risk of cockling. Bristol Board is available in A4 size with 20 sheets per pad