Mont Marte Premium Watercolour Pads have 15 sheets of 180gsm, acid free, German paper with medium toothtextured paper. This paper is a wonderfully versatile medium which can be used with a huge range of sketching media.The sheets are tape bound which makes removing them quick and easy. The sheets are also supported by a 2mm thick backing board. Practicalpainting tips are included on the inside cover.