Aquafine Watercolour Paper Is Manufactured On A Fourdrinier Paper Machine Using 100% Virgin Wood Pulp. It Is Acid-Free And Buffered To Prevent Deterioration Of Colour And To Preserve The Integrity Of The Paper Over Time. The Paper Is Free Of Oba And Is Surface And Internally Sized.Aquafine Watercolour Paper Is Aimed At Beginners And Students As Well As Professional Artists Preferring To Work In Mainly Dry Water Colour Painting Techniques.12 Sheets, 300G/M, 140Lb