Hahnemühle The Collection Watercolor Block - Rough, 11.8" x 15.7", 140 lb, 10 Sheets 11.8" x 15.7" Hahnemühle The Collection Watercolor Blocks are made using eco-friendly energy sources in a family-owned mill which has operated in Dassel, Germany since 1584. Premium mouldmade paper crafted from 100% cotton rag, this acid-free paper features a cold press texture and vegan sizing. Sheets feature a durable surface suited to the most rigorous watercolor techniques. Fibers will not lift, rub off, or loosen even with multiple layers of color or when used with using masking fluids and tapes. - Hahnemühle The Collection Watercolor Block - Rough, 11.8" x 15.7", 140 lb, 10 SheetsThe Collection wc Paper, 11.8X15.7 300G R BK -