Winsor & Newton Artists' 190 GSM Water Colour Hot Press Paper Sheet, 22 by 30-Inch 90lb/190gsm, 22-by-30 inch loose sheet paper should be stretched if substantial amounts of water are to be used Made on a cylinder mold from 100% cotton Extremely strong and stable paper and is guaranteed 100% acid-free for archival permanence Hot Pressed paper made very smooth and is popular with painters who like detail and don't utilize granulation particularly 1 pack of 5 sheets