Museum Series Aquabord from Ampersand is an acid-free textured clay surface that absorbs watercolour like a fine paper. Colours retain their purity and vibrancy in a way that even the finest of watercolour papers can't match. When compared with watercolour paper, this multimedia panel simulates the absorbency and texture of a cold pressed paper but allows colour to be lifted back to white easily while also leaving the richest, most vibrant colour possible. This workable surface provides natural looking highlights, fluid glazes, transparent subtle layers, and the ability to lift colour while the surface is wet or even after it is dry. Uniquely absorbent, Aquabord is perfect for watercolours and gouache, but is also ideal for casein and acrylics. The Aquabord will not tear, shrink or buckle even under heaviest water applications; they are also archival, eco-friendly and made in the USA. These boards come in either 1/8inch; (3mm) or 7/8inch (22mm) depths and are available in a range of sizes, from 12.7 x 17.8cm (5 x 7inch;) up to 40.6 x 50.8cm (16 x 20inch;).