ShinHan Professional Watercolor Palette (35+2 colors) ShinHan Professional Water Color Palette is made of Polycarbonate, an extremely durable (30 times stronger than acrylic) lightweight material. Suitable for all water-based media, it is designed to incorporate features that many professional painters, designers and art teachers will appreciate. It folds and locks for travel or storage, and has 3 large mixing areas, 35 color wells, and 2 unique round wells to ensure exact color reproduction. Total number of color wells can be maximized to 53 wells plus 2 unique round wells by inserting ShinHan Professional Watercolor subsidiary 18 color Palette (Sold Separately). The 53 wells+ 2 unique  round wells includes the insert of 18.