Manufactured using 100% virgin wood pulp, Aquafine Watercolor paper is acid-free and calcium carbonate buffered to prevent the deterioration of colour and to preserve the integrity of the paper over time. Every sheet is free of optical brightening agents and is internally and surface sized. Aquafine Watercolor paper is designed for beginners & students as well as professional artists preferring to work in mainly ‘dry’ Watercolor painting techniques. Its weight of 300gsm offers good water absorbency and the surface is fairly hard providing good erasability and suitability for masking fluid without stretching.