The Fluid Watercolour Paper Collection was created specifically for the fine artist. This series of watercolour paper is crafted by our European mill partner with over 400 years of paper making experience. Fluid Watercolour Paper is produced at slow speeds for a stronger premium-quality paper. The Easy-Block method of binding allows paper to be used as a block or a pad. Fluid 100 Watercolour Paper is an archival 100% rag cotton paper that is gelatin-sized. 640gsm / 300lb. Cold press watercolour block.