Thank you for viewing. Holbein Waterford Watercolor Paper Natural Size: F6 (410mm x 318mm) Thickness: 300g/m² Medium Grain Remaining sheets: 6 Block type It has been stored in a dark place, but since it was purchased several years ago, the quality cannot be guaranteed. Please be aware of this if you are concerned. As shown in the photos, one side of the block has come off the backing board.