Watercolor Postcard Tins are ideal for creating tactile and visually unique pieces in miniature form. The round-edged postcards have an address field printed on the back, ideal for on-the-go watercolor, plein air painters and urban sketch artists. Use the 230 gsm soft textured, natural toned paper with pencil, brush and pen for both wet and dry painting techniques. Transport safely in the metal box. 30 postcards per tin.