Saunders Waterford Watercolour paper is a high quality watercolour paper that is mould made from 100% rag (cotton). It is acid free and watermarked, has deckled edges (only on full imperial (56 x 76cm) sheets) and is calcium cabonate buffered.This watercolour paper is available in Hot Pressed, NOT, and Rough Surfaces.640gsm|10 sheets| HOT PRESSED| 1/4 imperial (28x38cm | 11x15")