- Superior quality 100% cotton paper for wet and dry media - Gelatin-sized to the core and air-dried - Naturally white, archival, and glued on all sides - Range of sizes, surfaces, and weights - Mouldmade in France Setting the world standard for watercolor paper, Arches Watercolor Blocks feature pre-stretched, air-dried paper made from 100% cotton rag. Crafted in the same French mill since 1492, these papers are produced on a traditional cylinder mould, ensuring optimal strength and a handmade quality that you can both see and feel. The naturally white, acid-free sheets are sized with natural gelatin that penetrates to their core, providing outstanding absorbency and a consistent texture. Arches Watercolor Blocks are durable enough to support multiple washes of color, rigorous scrubbing, artists’ tape, and masking fluid without surface damage. The convenience of having the paper glued on all four sides eliminates the need for stretching, making it ready to use whether you're painting in the studio or outdoors.