Watson watercolor paper resists water damage and has a versatile thickness and paper quality. White Watson is suitable for expressing brightness differences such as summer and winter. This whiteness is achieved by using only natural water without any additives. It is excellent with watercolors and works well with charcoals and pastels. It also retains water well, allowing for blurring, blurring, back-running, and rifting. In the case of pastels, the elasticity of cotton allows you to paint to a finish similar to oil painting. Size Catalog Number SM HW-2401 F3 HW-2403 F4 HW-2404 F6 HW-2406 F8 HW-2408 F10 HW-2410 【 SPEC 】 Surface : Type Paper - Spiral book Paper : Material High percentage Cotton Surface : Colour White Surface : gsm 239 gsm Paper : Format Spiral book Quantity : Sheets 15 Sheets To use with Watercolour , Pastel , Pencil Other Acid free