Winsor & Newton Water Colour Marker Pads, 12 by 16-Inch Cold pressed/not mold-made paper gives a stable and durable surface Internally sized for color brilliance, the paper is 100-percent acid free, increasing the longevity of art work Contains 15 sheets of 140lb/300gsm paper and available in 3 sizes Cold pressed/not mould-made paper gives a stable and durable surface Internally sized for color brilliance, the paper is 100-percent acid free, increasing the longevity of art work Contains 15 sheets of 140lb/300gsm paper and available in 3 sizes