The Cass Art Smooth Hot Press Watercolour pad has 12 sheets of acid-free paper with 300gsm, ideal for any watercolour techniques, perfect for students, hobbyists and artists alike. The 300gsm weight allows this paper to withstand heavy water washes when sized. Acid free and archival quality Internal sizing allows for an even absorbency of watercolours The smooth surface is perfect for fine detailed works. Not only is this a great surface for watercolours, it can also perfect for lino printing, block printing, screen printing or calligraphy.