MULTI MEDIA GRID PAPERS : Design Ideation brand sketch, drawing, watercolor and mixed media sheets are premium quality papers. Design Ideation brand papers are recycled, acid free and suitable for ink, graphite, charcoal, marker and watercolor paints. The archival sheets won’t bleed through and will stand the test of time. HANDMADE STUDIO BRAND. All Design Ideation brand products are made in the USA.