These Saunders Waterford Watercolour Pads feature the beautifully responsive 300gsm Cold Pressed Waterford paper in "A" sizes. Saunders Waterford is an exquisite watercolour paper, traditionally made on a cylinder mould machine. Its attractive surface is created using natural woollen felts that give it a distinctive random texture. The surface is sized in gelatine making it strong and resilient to scrubbing, and other rough treatments. Made using 100% cotton, the highest quality papermaking material, to high archival standards. Each sheet is buffered with calcium carbonate to help defend finished pieces of work from discolouration caused by acids present in atmospheric pollution.