Watson watercolor paper resists water damage and has a versatile thickness and paper quality. Natural colors have an elegant finish suitable for mild spring and autumn tones. 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 ( 237 x 168 ) NW-1401 F2 ( 268 x 190 ) NW-1402 F4 ( 343 x 252 ) NW-1404 F6 ( 419 x 328 ) NW-1406 F8 ( 465 x 389 ) NW-1408 F10 ( 540 x 465 ) NW-1410 【 SPEC 】 Surface : Type Paper - Pad Paper : Material High percentage Cotton Surface : Colour Natural Surface : gsm 300 gsm Paper : Format Block Pad Quantity : Sheets 15 Sheets To use with Watercolour , Pastel , Pencil Other Acid free