Winsor & Newton Professional Watercolour Block 300gsm / 140lb – Rough

From Winsor & Newton – these professional grade watercolour blocks are made from 100% cotton and mould made. – Acid-free – Free of optical brighteners – Offer a natural bright white of archival quality – will not yellow over time – Paper is 300gsm / 140lb in weight – Blocks contain 20 sheets – Blocks are glued on all four sides – Paper has a rough surface Also available in Cold Press (medium surface) and Hot Press (smooth surface).