Clairefontaine
Fontaine is a premium 100% cotton and acid-free paper produced at the Schut Mill. The surface of this paper has undergone a proprietary gelatin sizing process that helps to deliver extraordinarily brilliant colors. The 300lb block is recommended for experienced artists. Available in wirebound books (12 sheets).
Thanks to its high absorption capacity, Clairefontaine Fontaine Watercolour Paper is perfect for watercolour, but it can also be used for gouache, ink or acrylic. Minor alterations can be made using an eraser. 
Clairefontaine Fontaine Watercolour Paper is warp-resistant even when wet. It is an exceptionally easy paper to work with.
 
Most popular texture for watercolor artists
Light grain, medium tooth for excellent water absorption
Perfect for wet on wet techniques
Wirebound pad and sheets: 300g (140lb) 100% cotton
This spiral notebook on the side allows use on both sides of the sheet and can be opened flat or 360°. It is ideal for creating a watercolour album.
ACID-FREE, pH neutral and can be used for archiving