Crafted in small batches at slow speeds in a European paper mill, Fluid watercolor papers possess the strength and working integrity of more expensive mouldmade papers. Glued on the two long edges, the Fluid Easy-Block allows artists to paint right on the block without wetting or stretching the paper. The paper is easily separated by sliding a dull knife or letter opener in the open side under the top sheet when the painting is complete. Fluid Easy-Blocks contain 15 acid-free , cold or hot press sheets. 140 lb (300 gsm).