Strathmore Windpower 140lb Watercolor Paper Pad - This paper is made with 100% wind power – a pollution free, renewable energy resource – perfect for the environmentally conscientious consumer. It is natural white, 140lb. cold press paper that is suitable for all wet media techniques using watercolor, gouache and acrylic. Acid-free with good wash and lifting properties, it is ideal for artists mastering watercolor techniques and for accomplished artists. The pads have 15 wire-bound sheets.