- Professional-quality, natural white paper - Acid-free alpha cellulose with vegan sizing - Superior light resistance - 10 loose sheets; 140 lb (300 gsm) weight - Offers maximum durability for wet-on-wet techniques Hahnemühle Harmony Watercolor Sheets are designed to withstand the heaviest wash techniques, repeated erasing, and wet lifting. In order to achieve this level of durability, the 140 lb (300 gsm) fine grain paper is treated internally and externally with cruelty-free vegan sizing. Even masking tape pulls away easily from the surface-sized paper without tearing or leaving residue behind. Colors pop against the alpha cellulose’s natural white color, and the paper’s light-resistant, acid-free formulation helps ensure colors remain true for years to come. Perfect for watercolor, gouache, and other wet-on-wet techniques, each pack contains 10 sheets of matte watercolor paper.