Saint-Cloud Hardcore Professional Canvas Panels feature acrylic and Artfix primed Belgian linen. The highly absorbent ground is universally acceptable for most all paint types. The heavy-weight linen has a fine weave and creates an even fine surface texture. The panel is sized and sealed in front and has a vinyl backing making the panel impervious to moisture which keeps it flat. The archival, acid-free and pH balanced 1/8" thick panels are work well for oils acrylics and alkyd paints. They are ready to paint and are ideal for plein air painting.