Watercolor paper by Strathmore, Seth Cole and Bienfang is professional-grade watercolor art paper with a strong, rough surface, sized to withstand repeated washings and scrubbings. Specially treated neutral pH sheet enhances the brilliance of your watercolors. Archival and acid-free. Made in USA. Exceptional wet strength, for all types of watercolor techniques. Available in regular 90 lb. (192 gsm) or 140 lb. (300 gsm) weights. 12 and 15-sheet pads. Made in USA. Seth Cole and Bienfang cold press watercolor paper.