Strathmore 300 Series Watercolor Pad features economical, heavy-weight, student-grade paper being ideal for beginning watercolorists for experimenting and perfecting techniques. Paper in the book is cold press on one side which is the most popular surface for many watercolor work, while the other side being smooth with only a hint of surface texture is perfect for detailed work. Book measures 9 in x 12 in and contains 24 sheets of 140 lb basis weight paper.