This high quality 300gsm / 140lbs Mould-made watercolour paper is acid free, natural white and internally sized. Available in two different surfaces and containing 20 sheets, the blocks are suitable for creating smooth washes, paintings with crisp and hard edge also the use of gouache and tempera. Due to being glued and gauzed on all four sides, you can work directly onto the block, ensuring that the paper remains flat when wet. The paper is acid free and age resistant.