GIAN Anti-slip. Safety cast in concrete GIAN anti-slip formliners : attractive, thin texture mat adhered inside concrete mould GIAN is the name of the innovative texture mat from Compañero. This texture mat is easy to handle and can be used repeatedly. GIAN 10 matted smooth The GIAN 10 has a slightly matted texture that gives the concrete surface a velvety look. The smooth-looking surface provides good anti-slip properties when used indoors. The GIAN 10 prevents concrete from becoming shiny, which is why this matted texture is sometimes used by architects and builders on building facades for purely aesthetic reasons.