The Daler Rowney Langton Block contains12 sheets 300gsm/140lb acid free watercolour paper. This paper has a 'Rough' surface. Langton water colour paper is colour stable and mould made.
The paper in these pads is glued on all four sides to form a block so that the paper does not need to be stretched.
The best watercolour papers are acid free to prevent the deterioration of paint and to preserve the integrity of the paper over time.