US Art Supply 4 X 4 inch Professional Artist Quality Acid Free Canvas Panel Boards 12-Pack (1 Full Case of 12 Single Canvas Panel Boards) 100% Pure Cotton Artist Canvas mounted onto Acid Free Heavy Board Triple Acrylic Gesso Primed for Oil or Acrylic Painting 8-Ounce Finished Weight with Turned Edges Acid Free - Archival Quality - For All types of Media Great for Students and Professional Artists, use for Kids Crafts and all Decorative Painting Projects & more