Hot vs. Cold Pressed Watercolor Paper – Which is better for backgrounds? – K Werner Design Blog
Amazon.com: Arches Watercolor Pad, Hot Press 9"X12"
Amazon.com: Arches Watercolor Pad 9x12-inch Natural White 100% Cotton Paper - 12 Sheet Arches Watercolor Paper 140 lb Cold Press Pad - Arches Art Paper for Watercolor Gouache Ink Acrylic and More
Arches 640gsm / 300 lb. Hot Press Watercolor Paper Sheets – K. A. Artist Shop