An excellent choice for students and beginners, this watercolor block is ideal for watercolor, gouache, acrylic, ink, charcoal or greeting card design. Its versatile, cold press surface feels like cotton rag, and it is sized internally and externally, allowing for optimal absorbance. Machine made cotton/alpha cellulose watercolor paper. Produced with 100% of elemental chlorine free (ECF) pulp (Elemental Chlorine Free), FSC certified from forests responsibly managed respectful of environmental, social and economic standard.Details:White sheets11.8" x 11.8" sheet size90lb/200gsm20 sheetsAcid-freeCotton/alpha cellulose100% ECF pulpEnvironmentally friendly